With a ball anvil and chamfered spindle, the Vernier Ball Micrometer ideal for accurately measuring case neck thicknesses within an accuracy of 0.0001 inches.Features:Ideal for accurately measuring case neck thicknessesMeasure from 0 to 1 inches with accuracy within 0.0001 inchesRatchet stop ensures uniform pressure for measurement repeatabilitySpindle lock preserves measurement when removing cartridge case from micrometerBaked-enamel finish on C-frame provides durabilityPlastic storage case protects micrometer when not in use
