SPI Universal 1-2-3 Block Set - 13-669-7
- Matched pair
- Precision ground and case hardened on all six surfaces
- Squareness on all sides to 0.0001"
- 11 holes on three faces. Five 5/16-18 tapped holes arranged for holding down and conversion to an angle plate.
- Surface finish 6 to 16 micro inches
- Blocks are over sized to allow for normal lapping to 0.0003"
0.0001 Squareness Per Inch, 1-2-3 Block Set Setup Block
| Type | 1-2-3 Blocks |
| Contents | Pair of 1-2-3 Blocks |
| Number of Pieces | 2 |
| Fractional Height | 3 |
| Overall Length | 2 |
| Overall Width (Inch) | 1 |
| Squareness | 0.0001 |
| Tapped Hole Size | 5/16-18 |
| SPI Part Number | 13-669-7 |
Universal 1-2-3 Block Set
