Metrology Glossary: Radius Gage

What Is A Radius Gage?

A radius gage is a precision tool designed for the specific purpose of measuring the radius of an object, which refers to the distance from the center of the object to its outermost edge. The process of using a radius gage involves a few straightforward steps. First, the object to be measured is positioned under lighting to ensure a clear view of its edge. The radius gage is then delicately placed against the object’s periphery, with the tool’s blades facing the source of light. By carefully observing, the blade that fits most closely and seamlessly against the object’s edge provides an accurate representation of the object’s radius, allowing for precise measurements in various applications.

What Are Radius Gages Used For?

The radius gage is a versatile tool with many applications across various industries. In machining and metalworking, it plays a critical role in verifying the compliance of machined parts, such as gears and shafts, with design specifications, ensuring dimensional accuracy. Additionally, it aids in layout and inspection by marking precise radii on workpieces before machining. In toolmaking and die-making, the gauge is used to check cutting tools and dies for accurate radii, ensuring optimal functionality. In woodworking and carpentry, the gage facilitates making curved cuts and joints, offering precise measurements for furniture and cabinetry. It also is used to verify the radii of wooden patterns used in casting and molding processes. In sheet metalworking, the gauge contributes to precision in bending and forming sheet metal, marking exact curves for various applications. It also ensures the integrity of ductwork and piping systems by verifying appropriate radius bends. Overall, the radius gage proves to be an indispensable tool, promoting accuracy and efficiency in diverse industrial processes.