Micrometer Depth Gage, Ratchet Thimble, 0-225mm Range, 0.01mm
2-1/2" (63.5mm) base and 1/8" (3.2mm) diameter measuring rods
Combination ratchet and speeder for uniform pressure and quicker adjustment
Ring-type knurled lock nut for quick and sure locking
The depths of holes, slots, shoulders and projections can be measured with these fine tools