Measuring Instruments and Precision Measuring Instruments June 2026

Thread Check Inc is proud to be an authorized distributor of Gagemaker products. Gagemaker is a Houston based designer and manufacturer of precision mechanical inspection equipment for the quality control industry. Gagemaker has supplied quality gaging equipment to the oilfield, automotive, and general machining industries since 1982.

Gagemaker's MRP Series of gages and other products have revolutionized the industry of tapered threads. The innovative design allows for more accurate measurement of tubular connections which has aided the development of torque and turn measurements. Their gages provide an alternative to comparable plug and ring gages.

The Gagemaker catalog provides a detailed listing of many of our products including the following:

Application Software
Calibration Equipment
Thread Measurement
Premium Connection Gages

Click here for full Gagemaker catalog

Contact Thread Check for assistance with any of the items included in this catalog.

Mitutoyo

Micrometers, Calipers, Depth, Bore & Height Gages, Indicators, Gage Blocks, Surface Roughness & Hardness Testers, Profile Projectors, Digital Read Outs, SPC Systems, Microscopes, Parts & Accessories

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Mahr

Micrometers, Calipers, Depth, Bore & Height Gages, Indicators, Surface Roughness Testers, Air Gaging

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Starrett

Micrometers, Calipers, Depth, Bore & Height Gages, Indicators, Webber Gage Blocks, Surface Roughness & Hardness Testers, Ground Flat Stock, Granite Surface Plates, Tapes, Levels, Parts & Accessories

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Fowler

Micrometers, Calipers, Depth, Bore & Height Gages, Indicators, Gage Blocks, Surface Roughness & Hardness Testers, Shop Tools & Accessories

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Insize

Micrometers, Calipers, Depth, Bore & Height Gages, Indicators, Gage Blocks, Surface Roughness & Hardness Testers, Thread Gages, Microscopes, Torque Testing, Shop Tools & Accessories

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Thread Check Inc. offers a complete range of Chamfer Gages, Countersink Gages, Rivet Gages from Barcor Inc. Barcor gages are economically priced and simple to use. Barcor Inc. has a proven track record of offering precision gages that are accurate and repeatable. All Barcor gages are made in the USA and unconditionally guaranteed. Contact Thread Check’s expert sales engineer.

Stanley Engineered Fastening Systems

Gaging Spiralock® threads requires the use of special gages to ensure proper function of the thread. Non-Spiralock gages cannot determine the functionality of Spiralock® threads. Spiralock thread plug gages are the preferred gages for checking the tapped holes before installation of the Spiralock inserts.

Conventional Spiralock® threads are defined as those of 32 threads per inch and coarser in English sizes and 0.80 mm lead and coarser in metric sizes. These threads utilize a three (3) member gaging system. It consists of one (1) GO Pitch Diameter & Ramp Gage, one (1) NOT-GO Pitch Diameter Gage, and one (1) NOT-GO Ramp Gage. In the catalog, these gages are defined as GO PLUG, HI-LIMIT P.D., and HI-LIMIT RAMP, respectively. Spiralock® sawtooth threads are defined as those finer than 32 threads per inch in English sizes and finer than 0.80 mm lead in metric sizes. These threads utilize a two (2) member gaging system. It consists of one (1) GO Pitch Diameter & Ramp Gage and one (1) NOT-GO Ramp Gage. In the catalog these gages are defined as GO PLUG and HILIMIT respectively.

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Spiralock Acceptable Gaging Practice

Phase II is a Leading Supplier of Machine Tool Accessories, Material Testing Instrumentation, Precision Measuring Tools, Cutting Taps & Tools and Shop Supplies.

Founded in 1981 with emphasis on providing the highest quality products, Phase II has established a world-class reputation for quality and service. We take pride in offering more than just a product. We have "In House" Application Specialists who can guide you through product selection and maintenance. They are fully trained and qualified to give whatever technical support is needed. We also maintain a full range of replacement parts for our products.

Bench Top Hardness Testers
Coating Thickness Gauges
Portable Hardness Testers
Surface Roughness Testers
Ultrasonic Thickness Gauges

King

KING Tester Corporation is the industry leader in portable Brinell hardness testers, Rockwell testers, patented test blocks and microscopes. King Products

Thread Check is proud to be an authorized distributor for Balax, Inc., a privately held corporation located near Milwaukee in North Lake, Wisconsin.

Founded in 1958, Balax pioneered a design for cold forming taps featuring "Lead Form Geometry Correction", a process which reduces tapping torque by creating lead threads on pitch. The new taps, called Thredfloers, were said to be "BALanced AXially", giving rise to the company's name, BALAX.

Thredfloer Taps, with their low torque capabilities, soon found acceptance among US manufacturers across the country. Balax has since added other metalworking tools to its product line, including Thredshaver Cutting Taps, and Thread Gages.

All manufacturing processes are done in house at Balax, including blank making, heat treating, shank and square grinding, fluting, thread grinding and surface treatments. Balax also maintains a fully equipped tapping laboratory to test new design concepts for tapping torque, tapping speed, tool geometry, coolant or lubrication performance, pretap hole sizing, and material compatibility. Please contact Thread Check Inc. for all of you Balax tapping requirements.

Thredfloer Taps
Thredshaver Taps
Thread Gages
Tapping Oil

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TESA Brown & Sharpe

Micrometers, Calipers, Depth, Bore & Height Gages, Indicators, Shop Tools & Accessories

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DIATEST manufactures high-precision measuring instruments with a repeatability of up to 0,001 mm / 0,00005". Plug gages, Split Ball Probes, Plunger Probes, Chamfer Gauges, TD-Gauges, Gear Gauges, Dial Indicators, Diatron, Outside Diameter Gauges, Diacators, Dial Indicator Testors, Crank Shaft Gauges, Checking Stands, Floating Holders, Offset Heads, Setting Ring Gauges, Diawireless Gages.

Website

Catalog

Flexbar provides you with hundreds of unique industrial products covering a wide range of applications. You will find a wide variety of precision measuring instruments, machine tool accessories, machine safety guards, hardness testing equipment, surface roughness gages, and optical and video inspection systems.

Catalog

Thread Check offers the GSG chamfer gage which is an innovative easy to use gage for accurately measuring chamfers.

The indicator features a hard programmed ratio measuring mode which accurately calculates the chamfer size. The instrument includes one digital indicator, 1 collet assembly, 1 attachment housing and 1 thumb ring. Individual anvils and chamfer ring masters are offered in a wide range of standard and custom sizes. 3 Piece chamfer gage sets in 3 lengths and 4 included angle sizes are also available. Anvils are offered in standard sizes of 62°, 92°, 120°, and 135° as well as custom angles priced on request. The lengths include 2.0", 4.0" and 6.0".

Chamfer master ring gages are available in A2 steel and carbide. Chamfer master ring gages are supplied in class X tolerance and include a long form calibration report

Bausch & Lomb