Pointer is easy to set and a locking screw holds it in position for later reference Figures and increments are etched into surface. They are easy to read and will not rub off All four required measurements are made with a single gauge It is miniature and light weight, and can be easily carried in your pocket 100% product new and high quality The V-WAC gage easily and quickly checks the four essential measurements required for compliance with NRC visual weld acceptance criteria. checks under cut depth, porosity comparison, amount of porosity per linear inch and crown height. reference Gauge is made of stainless steel Package includes:1 x Welding Gauge Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.