Nikon Metrology 6D Autocollimator

Nikon's 6B autocollimator checks alignment and measures very small angular deviations to measure flatness or height by simple geometry. The 6D darkfield model projects a bright crossline and is the most popular model because the bright-line cross is the easiest to see. Provides measuring accuracy down to 0.5 arc seconds. Half Second Measuring Accuracy Readings of angular displacement of 0.5 second of arc using an easy-to-read large-diameter micrometer drum. 70mm Aperture Lenses The 6D employs a 70mm aperture lens to product clear, reflected images. It also features extremely accurate double line reticles for improved detection. Viewfield Diagram The 6D Autocollimator makes high-precision measurements simultaneously on two axes with the darkfield technique. It projects a bright crossline and Nikon's most popular model because the bright-line cross is the easiest to see.