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: ±.00012in±3µmfor micrometer head feed ±[.00008 + (.00004xR/3)]in R= max. measuring length (inch) ±(2+L/75)µmfor interchangeable rod, L=Max. measuring length (mm) Resolution: 0.001mm or .00005"/0.001mm Flatness of reference face: .00005in for 2.5in/1.3µmfor 63.5mm width base, .00008¡± for 4in/2µm for 101.6mm width base Flatness of measuring rod face: 0.3µm Parallelism between reference face and measuring rod face: [.00016 + (.00004 x R/2]in R=max. measuring range (inch) (4+L/50)µm, L=Max. measuring length (mm) Measuring rod diameter: .157in/4mm Display: LCD Battery: SR44 (1 pc.), 938882 Battery life: Approx. 3.5 years under normal use 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)