Fowler Outside Micrometer Set Fowler micrometers are of the finest quality available, at prices that defy competition. Special care in design and workmanship create a long lasting precision tool. Specifications include... 0-6" Measuring Range 0.001" Graduations Includes the Following Micrometers... 0-1" Micrometer # 52-253-001-1 1-2" Micrometer # 52-253-002-1 2-3" Micrometer # 52-253-003-1 3-4" Micrometer # 52-253-004-1 4-5" Micrometer # 52-253-005-1 5-6" Micrometer # 52-253-006-1 Features include... Ratchet Thimble Standard included Hammertone blue baked enamel finish. Microfine graduations on satin chrome finish and carbide tipped measuring faces. Diameter of measuring faces: .256" Accuracy: + 0.001" Quick, easy zero adjustment on sleeve. Positive lever locking clamp Spindle thread hardened, ground and lapped for ultimate accuracy. Anvil & spindle hardened and precision ground with microlap finish on tips. Includes a wrench and case.