Starrett - 260Z Groove Micrometer .050" to 1.050" Range

The Starrett 260 Groove Micrometer quickly and easily measures widths of internal or external grooves and lands. .001" Graduations. Range: .051"-1.050" Groove widths, 0-1.000" Land Widths. 1-5/8" maximum hole depth. Ships with a storage case.Each measuring disc is 9/32" (7mm) diameter and .025" (0.63mm) thick