SPI Hole-Mikes Set Ranges from 1.6 - 4.0" - 10-740-9
- Three point internal mikes for precise direct measurement of bore diameters.
- Self aligning and self centering.
- Carbide measuring anvils.
- Suitable to measure to within .050" of bottom of blind hole, up to 4" capacity.
- Feelers taper toward the back for positive reading of the front edge.
- Ratchet stop provides uniform measuring pressure and assures highest reading accuracy.
- In lieu of Setting Rings, Setting Frames are provided for diameter ranges above 4" dia.
- Hole - Mike accuracy: 1.6" 4" ± .00012", 4" 8" ± .0002", 8" 12" ± .0004"
- Setting Ring accuracy: 2" ± .0001", 2.8 & 3.6" ± .0002", 5 & 7" ± .0003", 9 & 11" ±.0005"
- Set comes with Extension, Setting Rings And Spanners In Wooden Case
Specifications:
| Type: | Hole-Mike Set |
| Measuring Range: | 1.6 - 4" |
| Maximum Measuring Range (Decimal Inch): | 4.0000" |
| Graduation (Decimal Inch): | .0002" |
| Thimble: | Ratchet Stop |
| Accuracy (Decimal Inch): | 0.00025 |
| Number of Heads: | 6 |
| Number of Rings: | 3 |
| SPI Part Number: | 10-740-9 |
See all SPI Hole-Mikes
Set Ranges from 1.6 - 4.0"
