It is an ideal measuring instrument for simplifying inspection and precision measurement of diameter, forming tools, gauges as well as template checking of thread and angles. Specifications: Measuring travel: 50 x 50mm Working distance: 67mm. Glass stage size: 96x96mm Maximum work-piece height: 115mm Maximum work-piece weight: 5Kg Magnification: 30x (15x eyepiece; 2x objective as standard) The eyepiece protractor is graduated in 1? Minimum angle reading: 6' Crossed roller bearings and key way stage construction ensure a true linear traverse in X and Y-axis. Sighting device: cross-reticel Resolution: Micrometer heads with 0.002mm minimum reading value for STM505; Digimatic measuring heads with 0.001mm minimum reading value for STM505D. Optional accessories: Rotary table; 5x, 10x objective Power supply: 110V/220V AC, 50/60Hz Dimension: 210x333x391mm Weight: 13.5Kg