The Rex OS-2-E Durometer Test Stand for AD-100 or DD-100 Durometers is used in conjunction with our Durometers to eliminate operator error sometimes associated with shop floor durometer testing. The stand features a load weight for the proper testing pressure as noted in ASTM D2240, and a quick-lock column for easy adjustment. It can be used with either the provided specimen holder or the optional O.R.F.-1 O-Ring Fixturing Set (sold separately).The OS-2H features an a dampener that lowers the durometer at the same rate for each test, resulting in superior repeatability for all durometer test.