Rockwell Hardness Calibration Test Blocks
Make sure your hardness testers are accurately calibrated. Blocks are marked with their corresponding Rockwell hardness and a serial number.
All blocks come with a calibration certificate traceable to NIST that states they've passed a test for accuracy.
| Hardness Scale | Accuracy | Ht. | Wd. | Dp. | Specifications Met | Choose a Hardness | Each | |
| E | ±5 | 2" | 2" | 1/4" | ASTM E18 | 00000000 | 0000000 |
Pressure-Grip Rockwell Hardness Testers
Operate these testers with one hand. Squeeze the handles until the penetrator contacts the test material and a reading appears on the dial indicator.
Throat | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Rockwell Hardness Scale | Hardness Measuring Range | Measuring Increments | Accuracy | Lg. | Ht. | Width | Ht. | Dp. | For Max. Material Thick. | Includes | Each | |
For Use On Aluminum | ||||||||||||
| E | 25-110 | 4.25 | ±1 | 8" | 3" | 1" | 3/8" | 1" | 1/4" | Extra Indenter, Test Strip | 0000000 | 000000000 |
Portable Rockwell Hardness Testers
Test hardness right on your production floor. Unlike benchtop testers, these portable ones don’t require you to move large or hard-to-access parts. They use an indenter to measure the hardness of aluminum, brass, and steel. These testers can be used at any angle without affecting accuracy.
For heat-treated material harder than Rockwell C20, use the optional C-scale diamond indenter.
Throat | Ball Indenter | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Rockwell Hardness Scale | Hardness Measuring Range | Measuring Increments | Accuracy | Ht. | Wd. | Dp. | Ht. | Dp. | Dial Dia. | Material | Dia. | Includes | Specifications Met | Each | |
For Use On Aluminum, Brass, Alloy Steel, Low-Carbon Steel | |||||||||||||||
| A, B, C, D, E, F, G, H, K | 0-100 | 1 | ±1.5 | 11" | 8" | 1 1/2" | 4 1/2" | 2 1/4" | 2 1/4" | Carbide | 1/16" | Three Anvils (Convex, V, Flat) | ASTM E110 | 0000000 | 000000000 |
| Optional C-Scale Diamond Indenter | 0000000 | Each | 0000000 |