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Autocollimator: Quiz

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Question 1: An autocollimator is an optical instrument for non-contact measurement of ________.
TriangleGeometryAngleLatitude

Question 2: An autocollimator works by projecting an image onto a target ________, and measuring the deflection of the returned image against a scale, either visually or by means of an electronic detector.
GoldOpticsAluminiumMirror

Question 3: A visual autocollimator can measure angles as small as 0.5 ________, while an electronic autocollimator can be up to 100 times more accurate.
LatitudeAngular diameterMinute of arcLongitude







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