Precise measurement for critical work: This stainless steel taper ruler accurately measures depth, hole diameter, and length so you can verify fit, clearance, and tolerance on the first check. resolution 0.1mm scale lets you make fine adjustments and reliable pass/fail decisions. Built to last in industrial conditions: Made from resistant stainless steel, the adjustable diameter depth measuring gauge resists wear and erosion so it stays accurate over repeated use in welding, woodworking, and metalworking environments. Clear, easytoread scale: The finely engraved 0.1mm markings provide crisp readings that reduce interpretation errors and speed routine inspections. Smooth, repeatable adjustment: The integrated nut adjustment mechanism gives controlled, tool tightening and fine setting of the taper diameter so you can lock the gauge at the exact size needed for consistent measurements. Key attributes Function: Measures depth, hole size (diameter), and length Material: Resistant stainless steel construction for durability Scale resolution: 0.1mm markings for precise readings Adjustment: Integrated nut mechanism for smooth, controllable tightening Applications: Designed for welding, woodworking, and metalworking inspection and measurement tasks Practical use cases 1) Welding inspection: Check joint penetration, bevel depth, and hole size to confirm weld prep and fitup before assembly or welding. 2) Woodworking setup: Verify groove and mortise depths or the internal diameter of dowel holes when setting routing or joinery tools. 3) Metalworking and machining: Confirm bore diameters, counterbore depths, and part lengths during setup and final inspection to ensure parts meet dimensional requirements. Why choose this gauge Reduces rework by giving accurate, repeatable measurements on the floor. Durable stainless construction keeps the tool usable in harsh environments. Fine 0.1mm graduation and a secure adjustment nut let you measure and lock sizes with confidence. Includes clear markings and a robust adjustment mechanism so technicians, woodworkers, and machinists can measure faster, with less guesswork, and greater consistency.