Mitutoyo Internal Dial Caliper-Type Gage For checking internal bores, recess diameters and grooves. Features include... 2.5mm - 12.5mm Measuring Range 0.005mm Graduations +0.015mm Accuracy Max Measuring Depth: 12mm Max Groove Depth: 0.7mm Minimum Groove Width: 0.5mm Contact Points 0.1mm Radius Spring loaded opening Press Button for closing arms. Arms automatically open when button is released Unit is spring-loaded and makes point contact at constant measuring pressure
