Collection: Shadow graph

A profile projector, also known as an optical comparator, shadowgraph, or shadow graph, is a precision measuring instrument used in manufacturing and quality control processes to compare the dimensions of a part or component against a standard or desired specifications.

Profile projectors are particularly valuable for inspecting parts with complex geometries or tight tolerances, such as gears, cams, threads, and intricate machined components. They provide a non-contact, high-precision method of measurement and are widely utilized across industries including automotive, aerospace, electronics, and medical device manufacturing.