Mitutoyo Depth Micrometer, Imperial Interchangeable Rod, Series: 129, 0 to 6 in, +/-0.00012 in Accuracy, Graduations: 0.001 in, 0.00005 in Resolution, Flat Anvil, Flat Spindle, 0.157 in Spindle Dia, Ratchet Thimble, Hardened Steel, Satin Chrome, 4 in L x 0.63 in W