Gauge Inspection & Calibration Master For periodic inpsection of gauges, reference gauge, masters inclduing : Plug Gauges , Ring Gauges Thread Plug and Thread Ring Gauges Gauge Block, Snap Gauges, External / Internal Micrometers, Bore Gauges, Indicators and Electronic Probes. Range : 0-600mm Resolution : 0.1µm (Standard) or 0.01 µm (Optional) Accuracy (U95) : 0.26µm Made in ITALY