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 …

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, …

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 …

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 …

Sep 18, 2025 · The top 12 optical comparators for 2025 offer unmatched precision and features, but discovering which one suits your inspection needs is essential.

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 …

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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 …