A radius gauge is used for what purpose?

A radius gauge is used for what purpose?

• A. to check the radius of a machined corner
• B. to measure thread pitch
• C. to gauge bore diameter
• D. to measure material hardness

Answer: (A)

Radius gauges are used to verify the size of a rounded corner or fillet on a machined part. You compare the corner to the set of gauges and choose the one that fits exactly; that matching gauge indicates the corner radius. This is important for ensuring proper fit, clearance, and stress distribution where corners meet other features. The other tools measure different properties: thread pitch gauges check the spacing of screw threads, bore gauges measure hole diameters, and hardness testers assess how hard the material is.

Radius gauges are used to verify the size of a rounded corner or fillet on a machined part. You compare the corner to the set of gauges and choose the one that fits exactly; that matching gauge indicates the corner radius. This is important for ensuring proper fit, clearance, and stress distribution where corners meet other features. The other tools measure different properties: thread pitch gauges check the spacing of screw threads, bore gauges measure hole diameters, and hardness testers assess how hard the material is.