This type of gauge heads are used for measuring outside diameter and provide non-contact measurement.
Two types of snap and ring style are available.
VC Type:
| Nominal Size D exceeded ~ less | A | B | L |
| 4 exceeded 10 or less | 38 | 47 | 90 |
| 10 exceeded 14 or less | 42 | 50 | 90 |
| 14 exceeded 24 or less | D+30 | 68 | 90 |
| 24 exceeded 40 or less | D+30 | 73 | 90 |
| 40 exceeded 55 or less | D+30 | 73 | 90 |
| 55 exceeded 70 or less | D+30 | 76 | 110 |
OR Type:
| Nominal Size øD exceeded ~ less | øA | T | L1 | L2 |
| 4 exceeded 10 or less | 53 | 18 | 156 | 110 |
| 10 exceeded 14 or less | 53 | 18 | 156 | 110 |
| 14 exceeded 20 or less | 63 | 24 | 164 | 110 |
| 20 exceeded 30 or less | 71 | 24 | 167 | 110 |
| 30 exceeded 40 or less | 85 | 24 | 180 | 110 |
| 40 exceeded 50 or less | 100 | 24 | 213 | 130 |
| 50 exceeded 60 or less | 112 | 24 | 222 | 130 |
