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The name DELTRONIC has become synonymous with accurate measurement. Deltronic has been a leader and innovator in high-accuracy measurement products since 1955.  Their goal has always been to deliver the highest quality products backed up by excellence in service at fair prices. Every Class X Deltronic gage is made to a single tolerance, plus .000040", minus nothing.
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Meyer Gage Company is a world leader in the manufacturing of fixed limit gages. Their product lines include English and Metric plug gages, pin gages, as well as ring gages, trilock gages and taperlock gages.  They are mostly known for their Class ZZ Pin Sets which they started making back in 1965. The competition has tried, but can't copy the quality of these affordable pin gage sets.
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A third generation privately held company in thread plug and ring gage manufacturing, Gage Assembly has built a well founded reputation as one of the industry’s highest caliber gage providers. A member of the National Association of Manufacturers, the company prides itself on safeguarding threaded components within some of the world’s most demanding industries.