The tester is applying to test the thickness of flat sheet specimens. It measures up to the standard of paper and cardboard thickness testing method---ISO534, ISO438, GB/T451.3 and GB/T1938. Technical characters: 1, Measure range: 0-3mm 2, Accuracy: 0.001mm 3, Measuring area: 200mm sqaured  4, Pressure: 100 Kpa, 5, Value error: +(-)0.5um or +(-)0.5% 6, Dimension: 80*120*120 (mm) 7, Weight: 2.5kg