Features: Accuracy engineered stainless steel cams type welding inspection gauge ensures accurate metric and royal measurements with erosion resistant construction for stable weld inspection results. Features double scale calibration, lightweight portability, and markings that maintain clear in harsh environments while complying with international measurement standards. Essential for welding inspectors, marine engineers, and construction professional requiring field prepare dimensional verification tools for critical infrastructure projects. Ideal for shipyards inspections, pipeline welding assessments, and structural steel fabrication site where strong measurement instruments withstand moisture and heavy duty use. Combines grade stainless steel durability with cams locks operate , delivering laboratory grade accuracy in portable format for fast on site measurement . Specifications: Component : Stainless steel Length: about 10.1cm/3.98inch Width: about 3.2cm/1.26inch Package Includes: 1xWelding Inspection Ruler note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.