Profile: Harshman Gauges & Engineering Co specializes in providing standard thread ring & plug gauges. Our products are thread plug & thread ring guages, taper thread plug & ring guages, plain plug gauges, plain ring/master gauges, snap gauges, special thread gauges, special purpose gauges, threading tips, HSS & CS taps & dies, HSS & carbide milling cutters and threading chasers. We also offer calibration services for gauges & measuring instruments.