Nikon 6B and 6D Autocollimators

The 6B-LED and 6D-LED autocollimators are extremely accurate manual measuring instruments from Nikon. They are typically used to verify linear alignment, small angular deviations, curvature, component flatness, feature heights and rotation.

Bright & dark viewfield

The Autocollimator 6B-LED is a bright viewfield instrument in which a black crosshair image is visible on a bright viewfield, while the Autocollimator 6D-LED is a dark viewfield instrument in which a bright crosshair image is visible on a dark viewfield.

LED illuminator

Both can operate on two AA batteries, enabling the instruments used in the environment where AC power is not available.

Measurement of radius of curvature for convex and concave surfaces

The light rays can be made to diverge or converge by turning the objective correction ring. This function allows measurement of the radius of curvature for convex and concave surfaces.