Mitutoyo Depth Gage 12" Range - 4" Base Specifications include... 0-12" range w/SPC Output .00005" Resolution 4" Base Features include... 4mm interchangeable rods, with lapped measuring end, provide a wide measuring range. The rod length can be adjusted in 25mm or 1in increments. With ratchet stop for constant force. With measuring rod clamp. With SPC output. With digit counter. Supplied in fitted plastic case. Technical Data Accuracy: + .00012" Base Flatness Inch: .00008" Base Flatness mm: 2µm Flatness of Measuring Rod Face: 0.3µm Resolution: 0.001mm or .00005"/0.001mm Parallelism Inch: [.00016 + (.00004 x R/2] In Primary Measuring Range Lower INCH: 0 In Primary Measuring Range Lower MM: 0mm Primary Measuring Range Upper INCH: 12 In Primary Measuring Range Upper MM: 304.8mm Contact Point Diameter Inch: .157 In Contact Point Diameter MM: 4mm Contact Point Diameter Inch: .00001 in Contact Point Diameter MM: .3µm Function of Digital Model Origin-set, Zero-setting, Data hold, Data output, inch/mm conversion (inch/mm models) Alarm: Low voltage, Counting value composition error Optional Accessories for Digital Model 05CZA662: SPC cable with data switch (40in / 1m) 05CZA663: SPC cable with data switch (80in / 2m)