An optical comparator (often called just a comparator in context) or profile projector is a device that applies the principles of optics to the inspection of manufactured parts.

Optical comparators and profile projectors are used to measure angles, radii, slots, circles and edges on two-dimensional parts. The comparator or projector uses a beam of light to project an image onto a …

Manufactured without compromise, Starrett optical comparators provide time tested, cost effective solutions for non-contact measurement. At the heart of these systems are precision optics, superb …

Benchtop and floor model optical comparators from OGP offer the industry’s best value and performance for non-contact measurement.

Optical comparators take precise 2D measurements of a part or workpiece. The magnified image of a part projects onto a screen with an X- and Y-axis. These optical comparators offer a non-contact …

Optical comparators are also commonly known as profile projectors, shadowgraphs, or comparator measuring tools. A typical optical comparator illuminates from below and projects the shadow of the …

With increased speed, agility and reliability, our optical comparators allow you to compare parts directly to their CAD data while accurately and efficiently completing inspections and digital optical …

Optical comparators are a type of optical measuring instrument. The measurement principle is similar to that of optical microscopes. The target is placed on the stage, and a light is shined on the target from …

Jun 17, 2025 · An optical comparator is an advanced device that utilizes light, magnification, and a projected image to provide non-contact, high-accuracy examination of manufactured components. It …

Explore the types, applications, and considerations of optical comparators. Learn how they are used for precise measurement and inspection in various industries.