Made of stainless steel,can be used for a long time and not easy to rust for Ultimate marking precision,allows accurately marking up to the finest millimeter Able to measure 45 degrees,90 degrees,depth,width to drawing lines Also work as a vernier caliper by inserting a straight ruler Easy to read,4 measuring range calipers available, Weight: 0.6172943336 Pounds, Manufacturer: YIXANNX