| Model No. |
Description |
| 900330-9413 |
A-Scale Test Block |
| 900330-9414 |
B-Scale Test Block |
| 900330-9415 |
C-Scale (Low Range) Test Block |
| 900330-9415C |
C-Scale (Low Range) Test Block NIST Certified |
| 900330-9416 |
C-Scale (Mid Range) Test Block |
| 900330-9416C |
C-Scale (Mid Range) Test Block NIST Certified |
| 900330-9417 |
C-Scale (Hi Range) Test Block |
| 900330-9417C |
C-Scale (Hi Range) Test Block NIST Certified |
| 900340-9001 |
HR15N Superficial Test Block |
| 900340-9002 |
HR30N Superficial Test Block |
| 900340-9003 |
HR45N Superficial Test Block |
| 900340-9004 |
HR45T Superficial Test Block |
| 900340-9005 |
HR30T Superficial Test Block |
| 900340-9006 |
HR15T Superficial Test Block |
| PHT1300-01 |
HLD Test Block (for Impact StyleD Testers only) |
| PHT1300-01C |
NIST Certification for HLD Test Block |
| PHT1100G-01 |
HLG Test Block (for Impact StyleG Testers only) |
USE OF REFERENCE TEST BLOCK STANDARDS
Rockwell hardness reference test blocks are used primarily for the indirect verification and daily verification of a Rockwell hardness tester. Reference test blocks are also useful when comparing the relative performance between two hardness testers by measuring the same blocks on both machines or for comparing the performance of two indenters. Proper care, handling and use of the reference test blocks is important to obtaining accurate measurements. It is critical that the reference test blocks not influence the hardness measurements due to improper use.
