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Technical Specifications

ISO Metric Theads

ISO Metric Theads

Gauges for testing ISO metric screw threads to the latest BS Standards 3643:2007 and BS 919:Pt 3:2007 (more)

Unified Theads

Unified Theads

Gauges for testing Unified threads to BS 1580: Parts 1&2:2007, BS 1580: Part 3: 2007, and BS 919: Part 1: 2007 (more)

BSW and BSF Thread Gauges

BSW and BSF Thread Gauges

Gauges for testing parallel threads having a full form Whitworth profile are manufactured to BS 84: 2007 and BS 919: Part 2: 2007 (more)

BA and G Series Thread Gauges

BA and G Series Thread Gauges

Gauges for testing threads having a full form BA profile are manufactured to BS 93: 2008 and BS 919: Part 2: 2007 (more)

Other Thread Forms and Specifications

Other Thread Forms and Specifications

Original Gauge and Calibration Solutions has a comprehensive library of thread gauge standards. We will be pleased to advise on the correct specification for your application. (more)

TiN Coated and Hard Chrome Thread Gauges

TiN Coated and Hard Chrome Thread Gauges

The TiN coating is a ceramic, so when it is in direct contact with a ferrous component, there is no galling. Thus, wear life of the coated gauge is significantly higher… between 5 and 7 times the life of a conventional gauge (more)

Taper Plug and Ring Gauges to BS21 and ISO7/2

Taper Plug and Ring Gauges to BS21 and ISO7/2

Gauges for testing pipe threads where pressure tight joints are made on the threads to BS 21: 1985 and ISO 7/2 2008 (more)

Valve Stem and Cylinder Neck Gauges

Valve Stem and Cylinder Neck Gauges

Gauges for testing the taper threads specified in BS 341: Part 1: 1991 (more)

NPT Taper Plug and Ring Gauges

NPT Taper Plug and Ring Gauges

Gauges for testing threads to American National Standard ANSI/ASME B.1.20.1 - 1983 (more)

NPTF Taper Plug and Ring Gauges

NPTF Taper Plug and Ring Gauges

NPTF Thread Gauges for testing threads to American National Standard ASME B1.20.5 - 1991 (more)

Plain Gauges, Limits and Fits

Plain Gauges, Limits and Fits

Plain gauges generally fall into two types:- plugs for internal holes and rings or gaps, sometimes referred to as ‘snap’ or caliper gauges for shafts. (more)

Plain Cylindrical Plug Gauges

Plain Cylindrical Plug Gauges

All plain cylindrical plug gauges are made from the finest steel or tungsten carbide, ground and precision lapped to ensure the highest quality and length of life in use. They can be produced to any specification up to 250mm diameter. (more)

Plain Ring Gauges

Plain Ring Gauges

Plain ring gauges are manufactured from the finest steel and are ground and precision lapped after a heat treatment process which includes a sub-zero stabilisation cycle to ensure dimensional stability. (more)

Plain Taper Gauges

Plain Taper Gauges

Gauges for testing conical fittings with a 6% Luer taper for syringes, needles and other medical equipment to ISO 594/1-1986 (BS EN 20594-1: 1998) (more)

Thread Measuring Cylinders

Thread Measuring Cylinders

See our technical specifications for our Thread Measuring Cylinders (more)

Rok-It Gauges

Rok-It Gauges

ROK-IT gauges are simple go/no go gauges which are lightweight and easy to use (more)