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) |
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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 |