【Precision Caliper】 The digital caliper has a measuring range of 0 6''/ 0 150 mm; accuracy to ±0.001"/0.02 mm and resolution to 0.0005"/0.01 mm. Perfect and precise micrometer for household or DIY measurements. 150mm measuring tools are still used by professionals and amateurs, jewelers, hobbyists, carpenters and DIYers. 【IP54 Waterproof amp; 【Stainless Steel Material】 The waterproof digital caliper is made of premium, WATERPROOF, rust proof STAINLESS STEEL, which has a solid frame with a lockable head. Polished stainless steel frame and thumb pulley that glides smoothly, sturdiness and durability, long, easy storage and carrying. 【Auto shut off amp; 【2 Batteries Included】 The digital caliper will automatically turn off if there is no operation in 6 minutes, which will greatly save battery power. Additionally, the package contains 2 3V CR2032 batteries in total. (1 has already been installed inside and 1 batteries for backup.) 【4 Measuring Channels amp; 【Large LCD Display】 The measuring tools come with two jaws and a probe with which depth, step, outside and inside diameter are easily measured, so that all your objects are measurable. Large, easy to read LCD screen, reading is clearer. Its display no need for glasses to read the measurements. 【Conversion of 2 units】 Convert inches, mm, according to your habits by pressing a button. Press the on/off button, slide the digital caliper to any location, then read the values on the screen. And you can reset it to zero with the zero key.