Standard Gage was an American company based in Poughkeepsie NY. They were purchased by Brown & Sharpe in 1987 and continued to manufacture dial indicators, bore gages and snap gages in and around the same area in New York State.
After Brown & Sharpe was absorbed into the Hexagon Metrology conglomerate, the Standard Gage product line was moved to Switzerland where production continued. However, over a short period of time small changes were introduced into the product so that the interchangeability of new parts with the original designs was compromised. When the US assets of Standard Gage were liquidated, a company called Dorsey Gage (now Dorsey Metrology) purchased them at auction and began hiring back key members of the manufacturing staff who had been laid off in order to resurrect the product line, and bring it back to its American-designed roots.
Nearly all of the Standard Gage bore gage products have been reproduced with the exception of the dial indicator in the housing. Dorsey already owned a very high quality dial indicator range that they acquired from the Hamilton Watch Company so it seemed a natural fit to add this product. Dorsey Metrology still make the bore and snap gage designs here in the US to the exact specifications set forth by Standard Gage.