Starrett Imperial Vernier Depth Gauge Micrometre

Measurement range of 0 up to 12", and resolution of 0.001" Vernier scale for precise measurements in fine units Includes 1/8" diameter adjustable measuring rods to cover the range Bases and measuring surfaces are hardened, ground, and lapped for durability and accuracy Ring-type knurled lock nut and combination ratchet and speeder for precise measurements