- Special designed tiny tip for precise measurements - Measure outside and inside diameters in inches or millimeters - Fitted in a case with one extra battery and a screw drive - Aluminum shell for professional look, Larger LCD display

- 8” x 10” ( 20.3 x 25.4 cm) Acetate sheet tablet - Matt finish on one side and high gloss finish on the other side - Highly transparent for clear viewing - 0.003” tear resistant thickness