Standard Test Block all Leeb type test probes except G type.
Test block D is calibrated in accordance with the dynamic hardness value L ( Leeb number ) by an independant laboratory.
The Hardness of the block is etched onto the top of the block in the values for HLD, HLC, HRC HV and tolerance.
Standardized according to JJG747-1999, ASTM A956-02,DIN 50156.
The replacement block that is include in most Leeb type hardness tester kits iis Hardness 790 +/-40 HLD
790 Leeb D, 57 Rockwell C, 643 Vickers
| Test Block | Impact device calibrated with | Also suitable with | Value range | Eveness | Dimensions | Weight |
| D | D, DC | DL,C,D+15 | 790 ± 40HLD | ≤4HLD | Φ90(±1)mmx55(±1)mm | 2.73kg |
| G | G | 590 ± 40HLD | ≤4HLD | Φ120(±1)mmx70(±1)mm | 6.17kg |
