Thread Height Gauges

Thread Height Gauges for All External Threads and for Internal Threads in Sizes 3 1/2″ and larger.

More Info

Setting Standards / Matching setting standards for various thread connections are also available.

More Info

Contact Points


½

5226

Gauge Type: Height Gauge
Thread Form: “V” Thread Form/API Line Pipe
Size Range: All External Thread Diameters
Dial Type: 0~50, Counter-Clockwise
Graduation: 0.001″
Dial Travel: 1/4″ minimum
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis.

Description: This gauge is designed to give a direct value for thread height measurement when used in conjunction with the 6780-L setting standard for “V” Threads. The measurement shown indicates the actual thread height.

5226-A

Gauge Type: Height Gauge
Thread Form: “V” Thread Form/ API Line Pipe
Size Range: All External Thread Diameters
Dial Type: 0~100, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″
Dial Travel: 1/8″ minimum
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis.

Description: The 5226-A is an External Thread Height Gauge used on all API “V” Thread Forms and indicates product error when used in conjunction with the 6780-L Setting Standard. By first “zeroing” your height gauge on the Setting Standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator.

5226XR

Gauge Type: Height Gauge
Thread Form: “V” Thread Form/ API Line Pipe
Size Range: All External Thread Diameters
Dial Type: 0~50, Counter-Clockwise
Graduation: 0.001″
Dial Travel: 1/4″ minimum
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis.

Description: This gauge is designed to give a direct value for thread height measurement when used in conjunction with the proper setting standard for “V” Threads. The measurement shown indicates the actual thread height. This gauge is specially equipped with extended travel to permit measurements of deeper thread forms.

5226-AXR

Gauge Type: Height Gauge
Thread Form: “V” Thread Form/ API Line Pipe
Size Range: All External Thread Diameters
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″
Dial Travel: 1/4″ minimum
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis.

Description: The 5226-AXR is an External Thread Height Gauge used on all API “V” Thread Forms and indicates product error when used in conjunction with the 6780-L Setting Standard. By first “zeroing” your height gauge on the proper setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge is specially equipped with extended travel to permit measurements of deeper thread forms. This gauge also features a Revolution counting hand on the indicator.

5886

Gauge Type: Height Gauge
Thread Form: “V” Thread Form/API Line Pipe
Size Range: All External Thread Diameters and Internal Thread sizes of 31/2″ & Larger
Dial Type: 0~50, Counter-Clockwise
Graduation: 0.001″
Dial Travel: 1/4″ minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis.

Description: This 5886 is one of the most popular of the “V” Thread Height gauges because it can be used externally on any diameter as well as Internally on the larger sized connections. It is designed to give a direct value for thread height measurement when used in conjunction with the 6780-L Setting Standard for “V” Threads. The measurement shown indicates the actual thread height.

5886-A

Gauge Name: Height Gauge
Thread Form: “V” Thread Form/API Line Pipe
Size Range: All External Thread Diameters and Internal Thread sizes of 3 ½” & Larger
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″
Dial Travel: 1/8″ minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis.

Description: The 6709-M is an External Thread Height Gauge used on all API Round Thread Forms and indicates product error when used in conjunction with the 6780-J Setting Standard. By first “zeroing” your height gauge on the 6780-L setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator.

5886XR

Gauge Type: Height Gauge
Thread Form: “V” Thread Form
Size Range: All External Thread Diameters and Internal Thread sizes of 3 1/2″ & Larger
Dial Type: 0~50, Counter-Clockwise
Graduation: 0.001″
Dial Travel: 1/4″ minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis.

Description: This gauge is used the same as the normal 5886, giving actual thread height measurement. However this gauge is specially equipped extended travel permitting measurements of the deeper thread forms

5886-AXR

Gauge Type: Height Gauge
Thread Form: “V” Thread Form
Size Range: All External Thread Diameters and Internal Thread sizes of 3 1/2″ & Larger
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″
Dial Travel: ยบ” minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis.

Description: The 5886-AXR is an External Thread Height Gauge used on all API Round Thread Forms and indicates product error when used in conjunction with the 6780-J Setting Standard. By first “zeroing” your height gauge on the proper setting standard, the product thread height error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. The indicator on this height gauge has extended travel to allow measurement of the deeper thread forms. This gauge also features a Revolution counting hand on the indicator.

5886-C

Gauge Type: Height Gauge
Thread Form: API Buttress Casing
Size Range: External and Internal Thread Diameters from 4 1/2″ to 13 3/8″.
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″
Dial Travel: 1/8″ minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis. A special feature specifically for Buttress Casing is that the measuring contact is located closer to the back of the anvil. This allows the user to record height readings closer to the “black thread” area while always resting on perfectly formed threads

Description: The 5886-C is an External Thread Height Gauge used on External and Internal API Buttress Casing threads ranging from 4 1/2″ to 13 3/8″. By first “zeroing” your height gauge on the 1233-A setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator and is equipped with a Tungsten Carbide Ball Point.

5886-B

Gauge Type: Height Gauge
Thread Form: Improved Buttress Tubing
Size Range: External and Internal Threads in sizes of 3 1/2″-5-1/2″
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″
Dial Travel: 1/8″ minimum
Anvil: Hardened steel, 60 degree V cross section, Dial Face perpendicular to thread axis. The anvil on the 5886-B is specially designed for the measuring of Improved Buttress Tubing (0-45 Degree Flank Angles). This special design utilizes a locator pin and an indented anvil to allow the 36 Degree Cone Point to rest perfectly at the root of the thread in order to get the most accurate reading.

Description: The 5886-B is used only on the external Improved Buttress Tubing threads. By first “zeroing” your height gauge on the 1231-E setting standard, the product thread height error is read on the dial. The measurement taken then indicates the deviation from the nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator.

5886-B16

Gauge Type: Height Gauge
Thread Form: API Buttress Casing
Size Range: External and Internal Thread Diameters from 16″ to 20″.
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″
Dial Travel: 1/8″ minimum
Anvil: Hardened steel, “V” cross section, specially designed to keep the measuring axis perpendicular to the pipe axis, Dial Face perpendicular to thread axis

Description: The 5886-B-16 is an External Thread Height Gauge used only on External and Internal API Buttress Casing threads ranging from 16″~ 20″. By first “zeroing” your height gauge on the 1233-SB-16 setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator and is equipped with a .072 diameter Ball Point.

5886-G

Gauge Type: Ring Groove Height Gauge
Thread Form: Ring Grooves on Couplings
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″
Dial Travel: 1/8″ minimum
Anvil: Hardened steel, “V” cross section, specially designed to keep the measuring axis perpendicular to the pipe axis, Dial Face perpendicular to thread axis

Description: This 5886-G is used to record a measurement of groove eccentricity. It is specially equipped with cylindrical contact point, which enables a firm contact with the groove. The measurement shown indicates the actual thread height relative to the bottom of the groove. A measurement can be made either by rotating the coupling while measuring or by obtaining several different readings.

5887

Gauge Type: Height Gauge
Thread Form: API Rotary Shouldered Connections
Size Range: All External Threads and for Internal Thread sizes of 3 1/2″ & Larger
Dial Type: 0-50, Counter-Clockwise
Graduation: 0.001″
Dial Travel: 1/4″ minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis. A special design feature allows the user to record height readings closer to the collar on Rotary Shouldered Connections.

Description: The 5887 is an External Thread Height Gauge used on all API Rotary Shouldered Connections. When set to the proper setting standard, such as the 6 870-S-11 or 6780-S-12, actual thread height measurement on most Rotary Shouldered and other Drill Pipe Connections can be accurately determined. It can also be used on other types of connections such as H-90, BECO, etc. In addition to the offset anvil, this gauge is specially equipped with an extended range indicator and a Tungsten Carbide Contact Point.

6709-L

Gauge Type: Height Gauge
Thread Form: API 8 & 10 Round Thread Forms 
Size Range: All External Threads and for Internal Thread sizes of 3 1/2″ & Larger
Dial Type: 0~50, Counter-Clockwise
Graduation: 0.001″
Dial Travel: ~0.130″
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis. 

Description: The 6709-L is an External Thread Height Gauge used on all API Round Thread Forms and is gives a direct value for thread height measurement when used in conjunction with the 6780-J Setting Standard. It can be used externally on all pipe sizes and Internally on the larger diameter connections. A specially designed two piece Cone Point system allows the outer Self Centering Cone to rest on the thread flanks, while guiding the inner contact point into the exact center of the root radius. This prevents measurement errors caused by incorrect contact point location. The measurement shown indicates the actual thread height.

Setting Standards/ Matching setting standards for various thread connections are also available.

Contact Points

6709-M

Gauge Type: Height Gauge
Thread Form: API 8 & 10 Round Thread Forms
Size Range: All External Threads and for Internal Thread sizes of 3 1/2″ & Larger
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″ 
Dial Travel: ~0.130″
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis. 

Description: The 6709-M is an External Thread Height Gauge used on all API Round Thread Forms and indicates product error when used in conjunction with the 6780-J Setting Standard. It can be used on all pipe sizes and Internally on the larger diameter connections. A specially designed two piece Cone Point system allows the outer Self Centering Cone to rest on the thread flanks, while guiding the inner contact point into the exact center of the root radius. This prevents measurement errors caused by incorrect Contact Point location. By first “zeroing” your height gauge on the 6780-J setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. It also features a Revolution counting hand on the indicator and a Tungsten Carbide Cone Point.

6710

Gauge Type: Height Gauge
Thread Form: API 8&10 Round Thread Form 
Size Range: All External Threads and for Internal Thread sizes of 3 1/2″ & Larger
Dial Type: 0~50, Counter-Clockwise
Graduation: 0.001″ 
Dial Travel: ~0.130″
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis. A special shortened anvil permits the contact surface to rest only on the fully formed threads when inspecting small diameter tubing. 

Description: The 6710 is an External Thread Height Gauge used on all API Round Thread Tubing and gives a direct value for thread height measurement when used in conjunction with the 6780-J Setting Standard. A specially designed two piece Cone Point system allows the outer Self Centering Cone to rest on the thread flanks, while guiding the inner contact point into the exact center of the root radius. This prevents measurement errors caused by incorrect contact point location. The measurement shown indicates the actual thread height.

6711

Gauge Type: Height Gauge
Thread Form: API 8&10 Round Thread Form 
Size Range: All External Threads and for Internal Thread sizes of 31/2″ & Larger
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″ 
Dial Travel: ~0.130″
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis. A special shortened anvil permits the contact surface to rest only on the fully formed threads when inspecting small diameter tubing. 

Description: The 6711 is an External Thread Height Gauge used on all API Round Thread Tubing and indicates product error when used in conjunction with the 6780-J Setting Standard. A specially designed two piece Cone Point system allows the outer Self Centering Cone to rest on the thread flanks, while guiding the inner contact point into the exact center of the root radius. This prevents measurement errors caused by incorrect contact point location. By first “zeroing” your height gauge on the 6780-J setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. It also features a Revolution counting hand on the indicator and a Tungsten Carbide Contact Point.

5226M

Gauge Type: Height Gauge, Metric
Thread Form: “V” Thread Form/ API Line Pipe
Size Range: All External Thread Diameters
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm
Dial Travel: 3mm minimum
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis.

Description: The 5226M is an External Thread Height Gauge used on all API “V” Thread Forms and indicates product error when used in conjunction with the 6780-L Setting Standard. By first “zeroing” your height gauge on the Setting Standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator.

5226-MXR

Gauge Type: Height Gauge, Metric
Thread Form: “V” Thread Form/ API Line Pipe
Size Range: All External Thread Diameters
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm
Dial Travel: 6mm minimum
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis.

Description: The 5226-MXR is an External Thread Height Gauge used on all API “V” Thread Forms and indicates product error when used in conjunction with the 6780-L Setting Standard. By first “zeroing” your height gauge on the proper setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge is specially equipped with extended travel to permit measurements of deeper thread forms. This gauge also features a Revolution counting hand on the indicator.

5886M

Gauge Name: Height Gauge, Metric
Thread Form: “V” Thread Form/API Line Pipe
Size Range: All External Thread Diameters and Internal Thread sizes of 89mm & Larger
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm
Dial Travel: 3mm minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis.

Description: The 5886M is an External Thread Height Gauge used on all API Round Thread Forms and indicates product error when used in conjunction with the 6780-L Setting Standard. By first “zeroing” your height gauge on the 6780-L setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator.

5886-MXR

Gauge Type: Height Gauge, Metric
Thread Form: “V” Thread Form
Size Range: All External Thread Diameters and Internal Thread sizes of 89mm & Larger
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm
Dial Travel: 6mm minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis.

Description: The 5886-MXR is an External Thread Height Gauge used on all API Round Thread Forms and indicates product error when used in conjunction with the 6780-L Setting Standard. By first “zeroing” your height gauge on the proper setting standard, the product thread height error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. The indicator on this height gauge has extended travel to allow measurement of the deeper thread forms. This gauge also features a Revolution counting hand on the indicator.

5886CM

Gauge Type: Height Gauge, Metric
Thread Form: API Buttress Casing
Size Range: External and Internal Thread Diameters from 114mm to 339mm
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01 mm
Dial Travel: 3 mm minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis. A special feature specifically for Buttress Casing, is that the measuring contact is located closer to the back of the anvil. This allows the user to record height readings closer to the “black thread” area while always resting on perfectly formed threads.

Description: The 5886CM is an External Thread Height Gauge used on External and Internal API Buttress Casing threads ranging from 114mm to 339mm. By first “zeroing” your height gauge on the 1233-A setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator and is equipped with a Tungsten Carbide Ball Point.

5886BM

Gauge Type: Metric Height Gauge, Metric
Thread Form: Improved Buttress Tubing
Size Range: External and Internal Threads in sizes of 89mm to 393mm
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm
Dial Travel: 3mm minimum
Anvil: Hardened steel, 60 degree V cross section, Dial Face perpendicular to thread axis. The anvil on the 5886BM is specially designed for the measuring of Improved Buttress Tubing ( 0-45 Degree Flank Angles). This special design utilizes a locator pin and an indented anvil to allow the 36 Degree Cone Point to rest perfectly at the root of the thread in order to get the most accurate reading.

Description: The 5886BM is used only on the external Improved Buttress Tubing threads. By first “zeroing” your height gauge on the 1231-E setting standard, the product thread height error is read on the dial. The measurement taken then indicates the deviation from the nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator.

5886-MB-16

Gauge Type: Height Gauge, Metric
Thread Form: API Buttress Casing
Size Range: External and Internal Thread Diameters from 406mm to 508mm.
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm
Dial Travel: 3mm minimum
Anvil: Hardened steel, “V” cross section, specially designed to keep the measuring axis perpendicular to the pipe axis, Dial Face perpendicular to thread axis

Description: The 5886-MB-16 is an External Thread Height Gauge used only on External and Internal API Buttress Casing threads ranging from 114mm to 339mm By first “zeroing” your height gauge on the 1233-SB-16 setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator and is equipped with a 1.82mm diameter Ball Point.

5886-GM

Gauge Type: Ring Groove Height Gauge, Metric
Thread Form: Ring Grooves on Couplings
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: .01mm
Dial Travel: 3mm minimum
Anvil: Hardened steel, “V” cross section, specially designed to keep the measuring axis perpendicular to the pipe axis, Dial Face perpendicular to thread axis

Description: This 5886-GM is used to record a measurement of groove eccentricity. It is specially equipped with cylindrical contact point, which enables a firm contact with the groove. The measurement shown indicates the actual thread height relative to the bottom of the groove. A measurement can be made either by rotating the coupling while measuring or by obtaining several different readings.

5887M

Gauge Type: Height Gauge, Metric
Thread Form: API Rotary Shouldered Connections
Size Range: All External Threads and for Internal Thread sizes of 89mm & Larger
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm
Dial Travel: 6mm minimum
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis. A special design feature allows the user to record height readings closer to the collar on Rotary Shouldered Connections.

Description: The 5887M is an External Thread Height Gauge used on all API Rotary Shouldered Connections. When set to the proper setting standard, such as the 6870-S-11 or 6780-S-12, actual thread height measurement on most Rotary Shouldered and other Drill Pipe Connections can be accurately determined. It can also be used on other types of connections such as H-90, BECO, etc. In addition to the offset anvil, this gauge is specially equipped with an extended range indicator and a Tungsten Carbide Contact Point.

6709MM

Gauge Type: Height Gauge, Metric
Thread Form: API 8 & 10 Round Thread Forms

Size Range: All External Threads and for Internal Thread sizes of 89mm & Larger
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm
Dial Travel: ~3mm
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis.

Description: The 6709MM is an External Thread Height Gauge used on all API Round Thread Forms and indicates product error when used in conjunction with the 6780-J Setting Standard. It can be used on all pipe sizes and Internally on the larger diameter connections. A specially designed two piece Cone Point system allows the outer Self Centering Cone to rest on the thread flanks, while guiding the inner contact point into the exact center of the root radius. This prevents measurement errors caused by incorrect Contact Point location. By first “zeroing” your height gauge on the 6780-J setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. It also features a Revolution counting hand on the indicator and a Tungsten Carbide Cone Point.

6711M

Gauge Type: Height Gauge, Metric
Thread Form: API 8&10 Round Thread Form
Size Range: All External Threads and for Internal Thread sizes of 89mm & Larger
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″
Dial Travel: ~3mm
Anvil: Hardened steel, “V” cross section, Dial Face perpendicular to thread axis. A special shortened anvil permits the contact surface to rest only on the fully formed threads when inspecting small diameter tubing.

Description: The 6711M is an External Thread Height Gauge used on all API Round Thread Tubing and indicates product error when used in conjunction with the 6780-J Setting Standard. A specially designed two piece Cone Point system allows the outer Self Centering Cone to rest on the thread flanks, while guiding the inner contact point into the exact center of the root radius. This prevents measurement errors caused by incorrect contact point location. By first “zeroing” your height gauge on the 6780-J setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. It also features a Revolution counting hand on the indicator and a Tungsten Carbide Contact Point.


Setting Standards / Matching setting standards for various thread connections are also available.

More Info

Contact Points

Contact Points: CP 120503/ T.S. Cone point for external V thread gauges

CP 12050 / T.S. Cone point for internal V thread gauges

CP 32050 / T.C. inner cone point for external round thread gauges

CP 32050S / T.C. inner cone point for internal rount thread gauges

10642 / Self-Centering Cone Point for int/ext round thread gauges

5785-A

Gauge Type: Internal Height Gauge
Thread Form: “V” Thread Form/API Line Pipe
Size Range: Internal Threads 11/2″ & Larger
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″ 
Dial Travel: ~0.130″
Arm Reach: 41/2″
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis. 

Description: The 5785-A is an Internal Thread Height Gauge used on all API “V” Thread Forms and indicates product error when used in conjunction with the 6780-L Setting Standard. It is a scissor type design for use on small diameter couplings, enabling the measuring point to be placed up to 4-1/2″ from the end. By first “zeroing” your height gauge on the proper setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator.

5785-D

Gauge Type: Internal Height Gauge 
Thread Form: “V” Thread Form/API Line Pipe
Size Range: Internal Threads 11/2″ & Larger
Dial Type: 0~50, Counter-Clockwise
Graduation: 0.001″ 
Dial Travel: ~0.130″
Arm Reach: 41/2″
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis. 

Description: The 5785-A is an Internal Thread Height Gauge used on all API “V” Thread Forms and gives a direct value for thread height measurement when used in conjunction with the 6780-L Setting Standard. It is a scissor type design for use on small diameter couplings while enabling the measuring point to be placed up to 4-1/2″ from the end. The measurement shown indicates the actual thread height.

7705-A

Gauge Type: Internal Height Gauge
Thread Form: API 8 &10 Round Thread Forms 
Size Range: Internal Threads 11/2″ & Larger
Dial Type: 0~10~0, Balanced w/ Revolution Counting Hand
Graduation: 0.0005″ 
Dial Travel: ~0.130″
Arm Reach: 41/2″
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis. 

Description: The 7705-A is an Internal Thread Height Gauge used on all API Round Thread Forms and indicates product error when used in conjunction with the 6780-J Setting Standard. It is a scissor type design for use on small diameter couplings, enabling the measuring point to be placed up to 4-1/2″ from the end but can be used on all coupling sizes greater than 1-1/2″. A specially designed two piece Cone Point system allows the outer Self Centering Cone to rest on the thread flanks, while guiding the inner contact point into the exact center of the root radius. This prevents measurement errors caused by incorrect contact point location. The 7705-A is used by first zeroing your height gauge on the setting standard and then recording the deviation from the API Standard. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator and a Tungsten Carbide Cone Point.

7705-D

Gauge Type: Internal Height Gauge
Thread Form: API 8 &10 Round Thread Forms
Size Range: Internal Threads 11/2″ & Larger
Dial Type: 0~50, Counter-Clockwise
Graduation: 0.001″ 
Dial Travel: ~0.130″
Arm Reach: 41/2″
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis. 

Description: The 7705-D is an Internal Thread Height Gauge used on all API Round Thread Forms and is gives a direct value for thread height measurement when used in conjunction with the 6780-J Setting Standard. It is a scissor type design for use on small diameter couplings, enabling the measuring point to be placed up to 4-1/2″ from the end but can be used on all coupling sizes greater than 1-1/2″. A specially designed two piece Cone Point system allows the outer Self Centering Cone to rest on the thread flanks, while guiding the inner contact point into the exact center of the root radius. This prevents measurement errors caused by incorrect contact point location. The measurement shown indicates the actual thread height.

5785-M

Gauge Type: Internal Height Gauge, Metric
Thread Form: “V” Thread Form/API Line Pipe 
Size Range: Internal Threads 38mm & Larger
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm 
Dial Travel: ~3mm
Arm Reach: 114mm
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis. 

Description: The 5785M is an Internal Thread Height Gauge used on all API “V” Thread Forms and indicates product error when used in conjunction with the 6780-L Setting Standard. It is a scissor type design for use on small diameter couplings, enabling the measuring point to be placed up to 114.3mm from the end. By first “zeroing” your height gauge on the proper setting standard, the product error is read on the dial. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator.

7705M

Gauge Type: Internal Height Gauge, Metric
Thread Form: API 8 &10 Round Thread Forms 
Size Range: Internal Threads 38mm & Larger
Dial Type: 0~50~0, Balanced w/ Revolution Counting Hand
Graduation: 0.01mm 
Dial Travel: ~3mm
Arm Reach: 89mm
Anvil: Hardened steel, “V” cross section, Dial Face parallel to thread axis. 

Description: The 7705M is an Internal Thread Height Gauge used on all API Round Thread Forms and indicates product error when used in conjunction with the 6780-J Setting Standard. It is a scissor type design for use on small diameter couplings, enabling the measuring point to be placed up to 89mm from the end but can be used on all coupling sizes greater than 38mm. A specially designed two piece Cone Point system allows the outer Self Centering Cone to rest on the thread flanks, while guiding the inner contact point into the exact center of the root radius. This prevents measurement errors caused by incorrect contact point location. The 7705M is used by first zeroing your height gauge on the setting standard and then recording the deviation from the API Standard. The measurement taken then indicates the deviation from the API Nominal, not the actual thread height. This gauge also features a Revolution counting hand on the indicator and a Tungsten Carbide Cone Point.

Allen Gauge and Tool Company

421 North Braddock Avenue
Pittsburgh, PA 15208

P.O. Box 8647
Pittsburgh, PA 15221

Phone: 412.241.6410
Fax: 412.242.8877