SINOCMP 1/2" 12.7mm Electronic Digital Caliper, Portable Accurate Carbon Fiber Composites Digital Plastic Thickness Caliper with Large LCD Screen Micrometer Gauge Hardened and tempered stainless steel digital calliper with satin finish Large LCD display - easy to read the precise result nternal, external and height,depth dimensions can be easily and accurately measured Stainless steel material , durable,with protective storage case Zero setting control allows for comparative measurement