Hohner Corporation was established in 1986 to manufacture high quality, precision optical encoders for industrial automation. Although the focus of our business is encoders, we have recently moved into the area of surface measurement including surface roughness sensor (www.surfacesensor.com). We also design and manufacture a complete line of intrinsically safe products for use in hazardous areas. (www.intrinsicallysafe.com). Hohner Corp. is an ISO 9002 company