Construction This tool is made of stainless steel and plastic for lasting performance and durability. It is designed for regular use and provides years of service. Versatile design A movable probe on one end and a replaceable probe on the other end allow quick adaptation to different measuring tasks. It is designed for a range of aperture openings, making it a versatile addition to your tool kit. Accurate measurement The tool delivers precise measurements every time, providing consistent and accurate results for both detailed projects and larger workpieces. Workpiece compatibility Ideal for measuring the diameter of different workpieces, it is suitable for a wide range of applications. It is designed for those who need to pay attention to precise sizes in woodworking, metalworking and more. Use scenarios - In woodworking or cabinetry, use to verify bore and hole diameters for fittings and hardware during assembly. - In metalworking or mechanical assemblies, use to check shaft, bore or bushing diameters to ensure proper fits. - In a workshop or manufacturing setting, use for quality control to confirm part diameters before machining or final assembly.