What is an Optical comparator and how it works
Answers
An optical comparator is a device that applies the principles of optics for the inspection of manufactured parts. In a comparator, the magnified silhouette of a part is projected on a screen, and the dimensions and geometry of the part are measured against the prescribed limits.
Optical comparators are easy measurement instruments to use. In less than a couple of hours, users with only a little amount of gaging experience can make accurate measurements using an optical comparator. Because an optical comparator displays the part’s 2-D image on-screen, the image can be easily associated with the part’s 2-D CAD drawing. This simplifies the process of developing measurement procedures for parts from drawings and minimizes the subjectivity of more complex measuring methods