
| Measure pitch diameter of screw threads |
| Graduation 0.01mm |
| Non-rotating spindle |
| Ratchet stop |
| Supplied with 60° setting standards (except 0-25mm) |
| Optional accessary: 55° setting standards (code |
| 3281-SP), measuring tips (code 7381, previous page) |
| Code | Range | Micrometer head accuracy |
Ball tips accuracy |
L | b |
| 3281-25A | 0-25mm | 4μm | 8μm | 42 | 26 |
| 3281-50A | 25-50mm | 4μm | 8μm | 67 | 38 |
| 3281-75A | 50-75mm | 5μm | 10μm | 92 | 50 |
| 3281-100A | 75-100mm | 5μm | 10μm | 117.6 | 62 |
| 3281-125A | 100-125mm | 6μm | 15μm | 143 | 70 |
| 3281-150A | 125-150mm | 6μm | 15μm | 168.2 | 82 |
| 3281-175A | 150-175mm | 7μm | 15μm | 192 | 94.5 |
| 3281-200A | 175-200mm | 7μm | 15μm | 217 | 107 |