PMC Companies is the premier leader in manufacturing and calibrator of gages, metrology equipment, instruments, and plug, rin ... g, and thread gages. The company’s history dates back to PMC Industries Inc., established in 1912 and acquired by Park Ohio Industries Inc. Nick Bosworth purchased the gage and instruments divisions in 1999. Today PMC Companies encompasses renowned brands including Lone Star, Mercury, VanKeuren, GF Gage, and Size Control. Each brand brings an exceptional value in technology, gage maker process, and regional brand recognition making PMC Companies the foremost leader in the gage industry. read more