| MODEL | RANGE | ACCURACY |
| 293-582 | 300-325MM | +-6um |
| 293-583 | 325-350MM | +-6um |
| 293-584 | 350-375MM | +-6um |
| 293-585 | 375-400MM | +-7um |
| 293-586 | 400-425MM | +-7um |
| 293-587 | 425-450MM | +-7um |
| 293-588 | 450-475MM | +-8um |
| 293-589 | 475-500MM | +-8um |
| 293-821-30 | 0-25MM | +-2um |
| 293-831-30 | 0-1" | +-.0001" |