A Profile Projector, also known as an optical comparator, is a precision measuring instrument used to inspect and measure the dimensions of small mechanical parts by projecting their magnified silhouette onto a screen. This non-contact measurement tool is ideal for analyzing complex shapes, such as gears, threads, and cutting tools, where direct measurement may be difficult. It uses light to project the part’s profile, allowing operators to compare it with a standard template or perform dimensional checks using built-in measurement scales or software.
Profile projectors are widely used in manufacturing, engineering, and quality control processes for their ability to provide accurate, repeatable measurements without damaging the part. They offer high magnification and precise measurements in both 2D and 3D, making them suitable for inspecting intricate parts with tight tolerances. The versatility of the profile projector in measuring a wide range of components makes it an essential tool for industries requiring precision, such as automotive, aerospace, and electronics.