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- DeFelsko PosiTector BHI Barcol Hardness Impressor
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The PosiTector Barcol Hardness Impressor (BHI) is a hand-held electronic instrument that measures the indentation hardness of soft metals (aluminum, copper, brass), harder plastics, and fiberglass. It consists of a PosiTector body (Standard or Advanced) and an interchangeable probe.

PosiTector BHI Barcol Hardness Impressor Technical Specifications:

| Measurement Range | 20 – 100 Barcol |
| Resolution | 0.1 Barcol |
| Accuracy | ± 2 Barcol |
| Size* | 127 x 66 x 25.4 mm (5" x 2.6" x 1") |
| Weight* | 137 g (4.9 oz.) without batteries |
| Probe Size | 145 x 97 x 64 mm (5.7" x 3.8" x 2.5") |
| Probe Headroom | 140 mm (5.5") |
| Probe Weight | 400 g (14.1 oz.) |
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