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: Watreketal