Standard Pack = 1 piece(s). Type = Vernier Thread Micrometer ; Range = 3 To 4 Inch ; Thread Range = 24 To 3.5 Thread Per Inch ; Graduation = 0.001 Inch ; Accuracy = 0.0002 Inch ; Measuring Anvil = 60 Deg ; Features = Painted Enamel And Heat Insulated Frame, Positive Spindle Lock, Ratchet Thimble, Sizes Over 1 Inch Include Standard ;