Features:Electric 6" Stainless Steel Digital Vernier Dial Caliper Gauge Micro Meter 150MMNote: For the box is so heavy， and the post office would charge us by weight. so we send the item without original box. Sorry for this inconvenience， your understanding would be much appreciated.Electronic Digital Caliper Made of hardened stainless steel Internal， external and height dimensions can be easily and accurately measured Linear capacitive measuring system Zero setting in any position With a small locking thumb screw which locks the jaws in place Base measuring function: Inside， outside， depth and step measuring With easy to read large LCD display Handy conversion chart at the back An ideal tool for a broad range of industrial and automotive applications Specifications:Measuring range: 0¨C150 mm/ 0¨C6 inch. Resolution: 0.01mm/ 0.0005 in. Repeatability: 0.01mm/ 0.0005 in. Accuracy: + 0.02 mm/ 0.001 in. (<100 mm)， + 0.03 mm/ 0.001 in. (>100 ¨C 150 mm) Maximum measurement speed: 1m/s Power: 1 x 1.5V SR44 (silver oxide cell) battery (included) Battery life: 1 year for continuous usage / 3 years under normal operation Size: 240 x 80 x 12mm /9.4"x 3"x 0.5"Packging list:1 x Digital caliper 1 x 1.5V SR44 (silver oxide cell) battery