Topcon Unirex
Topcon Unirex I first learned about the Topcon name in the early ’70s. Topcon and Nikon optical comparators were used in the tool shop to follow complex shapes. Nikon had been a well-known brand, Topcon not so. Fast forward twenty years, fate brought theodolites my way, Topcon again. It took another twenty years for me to realize that Topcon made...