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 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 …

4 days ago · An optical comparator is a specialized inspection machine that projects a magnified shadow of a workpiece onto a glass screen to allow for precise measurement and inspection.

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 …

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 …

By projecting a magnified shadow or image of your part onto a screen, these optical comparators give you an easy way to measure and inspect its precise features.

Starrett Optical Comparators are a time tested, cost effective technology which is ideal for non contact measurement. Manufactured without compromise.