All the scale on the gauge are clear, sturdy and accurtae welding gaugeMade by stainless steel, not easy to rust and not easy to bendThe measurements of the gauge can be inches or millimetersGeneral Linear Measurements up to 2 inch (50mm)Bridge cam welding gauge mg-8, weld gauge, welding gage1. The material of the gauge is high strength stainless steel, then the ruler is not easy to bend and wear, never rust, and it also measurement.2. Above measurements are possible in either inches or millimeters3. weld inspection ruler with fastening screws can be fixed at any , then it is convenient for reading when you do the measurement4. It Laser-engraving and chemical corrosion. lines legible,not easy to fade.5. The rular surface is mechanical grinding, no glitches6. The Linear measurement range of the gauge is between 0 to 50mmMeasurements are possible in either inches or millimetersDepth of pittingDepth of undercut of preparationFillet weld throat sizeFillet weld lengthExcess weld metal (capping size)Misalignment (high-low)Color: silverMaterial: Stainless steelSize: 100x69mm, thickness: 1.35mmPackage Contents:1 x Welding Gauge1 x Instruction bookOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.