The Calibration Verification Kit enables operators to check critical parameters to verify the performance of a Taber Rotary Platform Abraser. This fast, reliable system check identifies potential concerns signifying when the instrument should be returned for repair. Includes: S-30 WearTrac™ Precision Wheel Set (1 pr.); S-45 wheel tracking cards (pkg. 15); vacuum test gauge w/adaptor caps & O-ring; dual unit vacuum plug; Taber Abraser clean-up hose. NOT INTENDED AS A SUBSTITUTE FOR REGULAR CALIBRATION!