Bluetooth Digital Internal Caliper Gauge (Fixed Contact point) Model SSIM-5
Measuring Range : 20-40 mm. Resolution : 0.01 mm. Indication Error : ±0.02 μm Maximum Measuring Depth : 150 mm. Contact Point Height : 4 mm. Contact Point Shape : φ2.5 mm. R 1.5 Measuring Force : 5 N or less IP Rating : IP67 Battery : CR2032 Weight : 565 g.