Functional Size Gages

Functional Size Gages

functional size - Functional Size Gages

Functional Size Inspection

Functional gauging takes into account the cumulative effects of diameter, lead, taper, flank angle and form error. Experience the same functionality of ring and plugs with the added benefit of accurately inspecting a range of sizes.

Functional thread inspection gages, or GO/NO GO gages, measure thread diameters. These functional gages are adjustable within a size range and use interchangeable thread rolls to measure different pitch threads.

Setting dimensions for the functional pitch diameter gages are provided by the TDWIN Thread Disk software. Gages can be set with specifically sized rod standards or a MIC TRAC Gage Setting System (MT-3000).


Gagemaker RG 7000 on Part in Lathe 300x247 - Functional Size Gages

External Functional Size

These functional size inspection (or “GO/NO GO”) gages measure external thread diameters ranging from ⅝” – 24″. The gages are adjustable within a size range and use interchangeable thread rolls to measure different pitch threads.

Setting dimensions for the functional pitch diameter gages are provided by the TDWIN Thread Disk Software. Indicators have a .5″ travel and .0005″ resolution with higher resolutions available.

Thread roll sets not included.The software and thread rolls are sold separately.


Gagemaker PG 6000 on Part 300x207 - Functional Size Gages

Internal Functional Size

Gagemaker also manufactures functional thread inspection gages that inspect internal threads ranging in diameter from 1.5″ to 24″. The gages are adjustable within a size range and use interchangeable thread rolls to measure different pitch threads. Indicators have a .5″ travel and .0005″ resolution with higher resolutions available.

Thread roll sets not included.The software and thread rolls are sold separately.


Gagemaker DPG 6500 Inspecting - Functional Size Gages

Deep Bore Internal Functional Size

The DPG-6500 gage inspects diameters of internal threads using thread rolls. This functional diameter gage inspects the effects of all thread element variations and reports any deviations.

All thread rolls are sold as sets separately.

*Not compatible with the DPG-6500.

Gagemaker ThreadRolls ProductPage1 - Functional Size Gages

Thread Rolls

Gagemaker thread rolls are sold in matched sets of two rolls. Specify the form and pitch of the thread when ordering. Our most popular models are listed below, but additional thread types and pitches and custom designed sets are available. Please contact customer service for more information. Thread rolls sets are sold separately.

UN Series (60° “V”)

“TRV” thread rolls inspect the functional fit of machine threaded parts with 60° “V” thread forms. These thread rolls are designed specifically for internal or external applications. Additional pitches are available. Please contact customer service for more information.


ACME and Stub ACME thread forms

“TRA” and “TRSA” thread rolls inspect the functional fit of parts with 29° ACME and Stub ACME thread forms. “TRSAM1” and “TRSAM2” inspect the functional fit of Stub ACME Modified-1 and Stub ACME Modified -2 thread forms. Additional pitches are available. Please contact customer service for more information.


ISO Metric Thread Rolls

“TRM” thread rolls inspect the functional fit of machine threaded parts with ISO Metric 60 “V” thread forms. Additional pitches are available. Please contact customer service for more information.



Trapezoidal Thread Forms

“TRT” thread rolls inspect the functional fit of machine threaded parts with trapezoidal thread forms. Additional pitches are available. Please contact customer service for more information.

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