Description: 100% and high quality. The digital height gauge made of light weight, high strength, wear-resistant engineering plastic. It can be used to set saw blade and router bit height as well as set the distance from a router fence to the bit. This gauge is a highly accurate measuring device developed specifically for woodworking Power: one A3 V battery (not include ) Specifications: Product name:Digital Height Gauge Material: Plastic Color:Black Size:(About)Height Gauge:16 x 230 x 40 x 60 mm Function:ON/OFF Switch ,mm/inch Switch ,Zero Setting ,Data Output Package Included: 1 PC x Digital Height Gauge Note: Transition: 1cm=10mm=0.39inch 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.