Webster Hardness Tester is a portable instrument which can perform on-site hardness testing on soft materials. By a quick and easy test, the hardness value can be read out directly with a simple clamp, in accordance with American Standard ASTM B647.
Measuring Range | 0–20HW (Equivalent to 20–110 HRE, Model W–20) |
Resolution | 0.5 HW |
Accuracy | 0.5 HW |
Hardness Range in Rockwell scale | 25–110HRE, 58–131HRV |
Specimen Dimension (mm) | Thickness 0.4 – 6; Inner diameter > 10 |