Company Profile

Founding and Background

The Germanow-Simon Corporation was founded in 1916 in Rochester, NY. Starting as a small machine shop, the company quickly grew to become a major supplier of replacement watch crystals made of plastic. During the 1930s G-S purchased Tel-Tru Manufacturing Company and developed this division to become a leading supplier of bimetal thermometers.

The G-S Plastic Optics Company was established in the late 1970s. Building on our internal expertise in injection molding and plastics processing developed over many years, G-SPO soon became a leader in the new technology of molded optics. Today, G-S Plastic Optics is one of the world’s leading suppliers of custom manufactured precision polymer optics.

Associate Company

Our associate company is Tel Tru Manufacturing Company. Tel-Tru offers instrumentation products such as Bimetal Thermometers, Digital Thermometers, Temperature and Pressure Transmitters, Pressure Gauges and Accessory products, that are designed and manufactured for worldwide distribution to sanitary, industrial, OEM, HVAC, and food service markets.