Two manufacturers who produce quality equipment are Supermax and Emco Maier (NOT ENCO). I have used their equipment for many years and have yet to find anything better. Emco Maier is rather pricey purchased new, but well worth the effort to seek out on the secondary market. As for DRO's for the last 30 years of my career I have used TRAK DRO's from Southwest Industries. Like the Trav-A-Dial that many old timers are familiar with, the TRAK uses a rotary encoder rather than a glass scale. Less bulky, easier to mount and reliable if kept clean. Keeping them clean consists of replacing the reader head wiper/seals occasionally and NOT using compress air anywhere around them.
