Anvil sets are supplied in 25mm steps (300-325, 325-350 etc) and each set has been manufactured to the exact tolerance size. The 300-325mm anvils are the master reference set and are used for setting the gauge in the setting ring. The other anvil sets are then fitted as required without further re-setting. This means that only one 300mm setting ring is required to set the gauge for all diameters in the full 300-500mm range of the instrument.
| XT5001M-BT | 300-325 | 15 | 120 | 300 | POA |
| XT5002M-BT | 300-325, 325-350 | 15 | 120 | 300 | POA |
| XT5003M-BT | 300-325, 350-375 | 15 | 120 | 300 | POA |
| XT5004M-BT | 300-325, 375-400 | 15 | 120 | 300 | POA |
| XT5005M-BT | 300-325, 400-425 | 15 | 120 | 300 | POA |
| XT5006M-BT | 300-325, 425-450 | 15 | 120 | 300 | POA |
| XT5007M-BT | 300-325, 450-475 | 15 | 120 | 300 | POA |
| XT5008M-BT | 300-325, 475-500 | 15 | 120 | 300 | POA |
| DHEXT500 | 500 | POA | |||
| DHEXT1000 | 1000 | POA |