This is a two point split contact point ideally suited to smaller bore measurements.It offers you the following benefits: A precision bore gauge so you can make quick and accurate measurements of small hole diameters (0.95-18 mm). You can replace the analogue indicator fitted to this instrument with a customer-supplied Digimatic indicator if you need. The contact point is hard chrome finish Features Range: 1.5 - 4 mm Graduation: 0.001 mm No. DialIndicator: 2109SB-10 Measuring depth: 17,5-22,5 mm (1) Number of anvils: 9 Repeatability: 2 µm Delivered: In box including plastic cover for Dial Indicator Digital/Analog: Analog Inch-Metric: Metric