
Functional Thread Gauges
Adjustable functional size (GO/NO GO) thread roll gauges for external and internal threads.

Functional gauging takes into account the combined effect of diameter, lead, taper, flank angle and form error — the same functional check as ring and plug gauges, but over a range of sizes. Gagemaker's functional size gauges are adjustable within a size range and use interchangeable thread rolls to measure different pitches.
External gauges cover thread diameters from 5/8" to 24" and internal gauges from 1.5" to 24", with indicators of 0.5" travel and 0.0005" resolution as standard. Setting dimensions come from the TDWIN Thread Disk software, and gauges are set with sized rod standards or a MIC TRAC MT-3000.
- Functional GO/NO GO check over a size range
- External 5/8"–24", internal 1.5"–24"
- Interchangeable thread rolls
- 0.5" travel, 0.0005" resolution indicators
- Metric and higher-resolution indicators available
- Replacing sets of ring and plug gauges
- Straight-thread production inspection
- Large-diameter threaded components
- Final inspection before assembly
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Pitch Diameter Gauges
Adjustable ball pitch diameter gauges for internal and external straight and tapered threads.
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Lead & Taper Gauges
Two- and three-point lead gauges and internal and external taper gauges for API and straight threads.
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Crest Diameter & Ovality Gauges
MRP gauges that detect diameter and ovality variation on tapered tubing, casing and premium connections.
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Wall Thickness & Groove Gauges
Groove diameter and width gauges, setting masters and GO/NO GO checks for API 6A BX, R and RX ring grooves.
View Details →Request GagemakerFunctional Thread Gauges
Contact our team for genuine Gagemakerfunctional thread gauges with full technical support and accredited calibration across the UAE.