Dasqua 0-150mm / 0-6″ IP54 Waterproof Digital Caliper ~ New advanced design. ~ Strictly made in accordance with DIN862. ~ IP54 protection against water, oil, dust or any other liquid. ~ Silky smooth movement throughout. ~ Hardened, ground and lapped measuring surfaces. ~ Reading is 0.01mm / 0.0005″ / 1/128″ (mm/in/fraction). ~ Accuracy is 0.02mm/0.001″. ~ Replacement battery is CR2032 #4102-0032.