IP67 & ALL IN ONE! Features. NEW HID Interface - no dongle needed. Extra battery tray and 1" standard includedSupplied with NIST certification. Measuring range: 0 - 6"/0 - 150mm. Accuracy: 0.001"/0.02mm. Heavy duty frame with 4 way measuring. Super large display. Bluetooth in a value priced electronic caliper. Protected to IP67.