【IP54 Waterproof & Stainless Steel Material】The vernier caliper is made of high-strength stainless steel and is waterproof and dustproof. Powered by battery, comes with a pre-installed battery and 2 spare batteries for gift. 【3 Units Conversion & Range】The digital caliper has 3 size modes of mm, inch and fraction. The measuring range: 0-6inch/0-150mm, Accuracy: ±0.001inch/0.02mm, Resolution: 0.0005inch/0.01mm. Perfect and accurate caliper measuring tool for household or DIY measurement. 【4 Measuring Modes & Feeler Gauge】The digital caliper has 4 measurement modes, which can be used to measure inside and outside diameter, depth, and step with two sets of jaws and a probe. 32 blade steel feeler gauge suitable for designers, engineers, mechanics to measure the thickness of tappet clearances, spark plugs gaps, piston ring gaps and other hard to reach places. 【ZERO Setting & Auto Shut Off】Thumb roller and slider clamp screw enables a high accuracy. You can also reset it to zero with the "zero" button for measuring the next section. If there is no operation within few minutes, the digital caliper will automatically shut down and the LCD display will turn off to save power. And when the thumb wheel moves, the display screen restores power. 【ABS Setting】One-click automatic measurement of absolute value and relative value, no manual measurement required. The Absolute Scale (ABS) feature allows you to track the origin point you set, even after shutoff. Turn it on again and the caliper can start measuring immediately, no need to zero. It is also possible to directly read the difference between two measured values.