This for Gauge designed with two parts for easy and measurement, and part of can be used to measure for and the other part is used to measure depth, you can use it to measure construction, railway, electricity, ceramic sanitary ware, automotive windshield and die and Mm and inch scale marks to meet your different measurement needs, very easy and to make measurement This Taper Gage adopts with a clear line for easy and quick reading, and the accurate figures and increments are etched into surface, no worry about the line will be rub off after long for time use This Taper Welding Gauge designed with a pocket size and lightweight for easy carry and use, you can simply keep it in your bag stainless steel to long lasting use, no worry about rusty and and wear resistance product, Manufacturer: JADEWaa