Insize Groove Micrometers
- Measure width of grooves inside bores.
- Non-rotating spindle
- Two graduations for inside and outside measurement.
- Two-directional ratchet stop
- Graduation: .001".
- 3287-1AB does not have sleeve

| Item No. | L | D | D1 | D2 |
| 3287-1B thru 4B | 4.724" | .512" Dia. | .256" Dia. | .394" Dia. |
| 3287-1AB | 3.543" | .256" Dia. | .118" Dia. | .197" Dia. |
For more info, visit www.p65warnings.ca.gov.
