Example. Measured with Grip-Guide 5 1/8. It will be drilled c/c 4 5/8, after 1/2 has been removed. The example is in bold below
| GG measured span | Remove for fingertip | Drill c/c span |
|---|---|---|
| 3 | 1/4 | 2 3/4 |
| 3 1/8 | 1/4 | 2 7/8 |
| 3 1/4 | 9/32 | 2 31/32 |
| 3 3/8 | 9/32 | 3 3/32 |
| 3 1/2 | 5/16 | 3 3/16 |
| 3 5/8 | 5/16 | 3 5/16 |
| 3 3/4 | 11/32 | 3 13/32 |
| 3 7/8 | 11/32 | 3 17/32 |
| 4 | 3/8 | 3 5/8 |
| 4 1/8 | 3/8 | 3 3/4 |
| 4 1/4 | 13/32 | 3 27/32 |
| 4 3/8 | 13/32 | 3 31/32 |
| 4 1/2 | 7/16 | 4 1/16 |
| 4 5/8 | 7/16 | 4 3/16 |
| 4 3/4 | 15/32 | 4 9/32 |
| 4 7/8 | 15/32 | 4 13/32 |
| 5 | 1/2 | 4 1/2 |
| 5 1/8 | 1/2 | 4 5/8 |
| 5 1/4 | 17/32 | 4 23/32 |
| 5 3/8 | 17/32 | 4 27/32 |
| 5 1/2 | 9/16 | 4 15/16 |
| 5 5/8 | 9/16 | 5 1/16 |
| 5 3/4 | 19/32 | 5 5/32 |
| 5 7/8 | 19/32 | 5 9/32 |
| 6 | 5/8 | 5 3/8 |