Mitutoyo's NEW QM-Height Gage Extreme Best-In-Class accuracy, increased functionality and ease of use. The QM-Height delivers outstanding accuracy to satisfy your most critical measurement needs. It measures maximum / minimum and displacement from the surface or by increment. It also measures inside / outside diameter via a unique process (detect the circle apex and process by tracing measurement). Additionally, the QM-Height has a variety of Styli available to match your specific application. Specifications include... 0-14" / 350mm Measuring Range High Accuracy: + (2.4 + 2.1L / 600)um A GO / NO GO Judgment Light (Red / Green / Orange) Battery Life = approximately 1200 hours of use Features include... Newly developed high-accuracy and high-resolution ABSOLUTE linear encoder for position detection. Easy reference icon keys. Possible to measure inside/outside diameter via unique process (detect the circle apex and process by tracing measurement). Various types of optional probes are available. Large size LCD. Go/no-go judgment is performed by setting the upper and lower tolerances. If a result is out of tolerance, the display changes from green to red, so tolerance judgment can be made at a glance. Slider elevation knob (for travel) / wheel (for measurement). With SPC and USB output. Selectable Resolutions... 0.00005", 0.0001" 0.001mm, 0.0005mm Includes AC Adapter Free Ground Shipping - Continental US