Chemical Engineering - Chemical Engineering Basics - Discussion

An autocollimator is an optical instrument for non-contact measurement of angles. They are typically used to align components and measure deflections in optical or mechanical systems. An autocollimator works by projecting an image onto a target mirror, and measuring the deflection of the returned image against a scale, either visually or by means of an electronic detector. A visual autocollimator can measure angles as small as 0.5 arcsecond, while an electronic autocollimator can be up to 100 times more accurate.

The autocollimator is a very sensitive angle measuring device and is thus used for the precise angular adjustment of optical or machine components.

The auto collimator is a very sensitive angle measuring device.