Made of high quality, durable plastic carbon fiber composites, you will not worry about the difference between plastic and metal. There are 2 unit conversion and zero setting function in the large LCD screen. Comes with a pre-installed battery and 2 spare battery, can make sure that you can use it for a long time without any concerns. 0-6”(150 mm) measurement range, ±0.01"(0.2 mm) accuracy and 4 measurement modes make it easy to fit most of your house used and daily used.