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 …

Here is everything you need to know about optical comparators, from the basics of comparator measurement to the accuracy of optical comparator measurements. Discover the benefits of …

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, …

Optical Comparators from OGP combine cutting-edge optics, lighting, and automation technologies for enhanced productivity and profitability. The benchtop and floor model …

Oct 21, 2020 · Optical comparators, also called comparators or profile projectors, are measurement tools used in the manufacturing industry. Comparators inspect, measure, and …

Dec 13, 2025 · Learn how to use an optical comparator for precise part inspection. Our detailed guide covers setup, basic measurements, and how to check complex angles.

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 …

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

May 27, 2025 · An Optical Comparator is a precision tool used to measure and inspect the dimensions, shapes, and angles of manufactured parts without physical contact. This type of …