Specifications: Measuring range: 0.0 mm to 2.0 mm, 0 mil – 80 mil Accuracy: 2% ± 0.1 mm, or 2% reading ± reading ± 4 mil Note: precision is in 23 ℃ ± 5 ℃, relative humidity of ≤ 75% (assure in work environment) Resolution: 0.1 mm / 1 mil Battery: 3 v button cell (without battery) Size: 6.9 X3.8 X2cm/2.72″X1.5″X0.79″