Radius gauge

A radius gauge, also known as a fillet gauge, is a tool used to measure the radius of an object.

Radius gauges require a bright light behind the object to be measured. The gauge is placed against the edge to be checked and any light leakage between the blade and edge indicates a mismatch that requires correction.

A good set of gauges will offer both convex and concave sections, and allow for their application in awkward locations.

Every leaf has a different radius, for example with radius intervals of 0.25mm or 0.5mm. The material of the leaves is stainless steel. Each gauge is one of two types; either internal or external, which are used to check the radius of inner and outer surfaces, respectively.

See also

• Thread pitch gauge
• Spherometer, an instrument for the precise measurement of radiuses

Notes

Bibliography

• Frane, James T. (1994), (Illustrateded.), Craftsman Book Company, ISBN978-1-57218-008-6.
• Kennedy, Clifford W.; Hoffman, Edward G.; Bond, Steven D. (1987), (6th, Illustrateded.), Industrial Press Inc., ISBN978-0-8311-1149-6.