Overview
Test blocks and test block kits are available for use with Shore A and M scale durometers (ASTM D2240), and provide accurate and immediate verification of a durometer's calibration status. Prior to using a durometer, it is recommended that the operator verify that the instrument is performing correctly by measuring the hardness of a rubber test block, then comparing those readings to the factory calibration data included with the unit. Using test blocks as a reference indicates if a durometer is reading within tolerance, however, test blocks are not to be used as a calibration device.
The kits contain seven silicone discs:
- 30, White
- 40, Yellow
- 50, Blue
- 60, Green
- 70, Red
- 80, Brown
- 90, Black
Additionally, each carrying case is equipped with a vinyl cover and all kits come with a NVLAP® Certificate of Calibration.
Accuracy
- +/- 2 points for Shore A
- +/- 5 points for Shore M