Fowler Outside Micrometer 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... 0-12" Measuring Range 0.0001" Graduations Includes the Following Micrometers... 0-1" Micrometer # 52-240-001-1 1-2" Micrometer # 52-240-002-1 2-3" Micrometer # 52-240-003-1 3-4" Micrometer # 52-240-004-1 4-5" Micrometer # 52-240-005-1 5-6" Micrometer # 52-240-006-1 6-7" Micrometer # 52-240-007-1 7-8" Micrometer # 52-240-008-1 8-9" Micrometer # 52-240-009-1 9-10" Micrometer # 52-240-010-1 10-11" Micrometer # 52-240-011-1 11-12" Micrometer # 52-240-012-1 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" Flatness: .00003" 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.