Protech [Progressive Technologies] offers Microprocessor Based Bearing Testing Instrument. Protech [Progressive Technologies] is an ISO 9001: 2000 certified company supplying a wide range of dispensers, tyre gauge, bearing tester, echometer etc. For various industrial applications. The Microprocessor Based Bearing Testing Instrument of model number 2021T is a handy bearing monitoring instrument for on-the-spot checking and evaluation of the condition of all ball and roller bearings.