- Tungsten carbide measuring faces on all 3-point heads above 1/2" (12.5mm)
- Each micrometer bore gage is furnished in a case, complete with setting ring, contacts, wrenches, and instructions
- Self-centering contacts for true readings
- Blind bore measuring capability above 1/2" (12.5mm) diameter
- Extensions available up to 6" (150mm) for deep hole measuring
- Setting rings included