Diamond backing plates, PMMA, pre-cut and vacuum sealed (2 each)

Polymethyl methacrylate plates are used to standardize the model 139-56 diamond taper tool (p/n 121006-1) in accordance with ISO 4586-2. Supplied in packs of 2, each plate is pre-dried and vacuum sealed. For use with the Taber Model 550 or 551 Cut/Scratch Tester (also Model 502-ISO).