Question

How many pads are included for use under the foot screws in leveling base of autocollimator?

(a) 2

(b) 3

(c) 4

(d) 5

The question was asked in homework.

I would like to ask this question from Optical Instruments for Angular Measurement topic in section Angular Measurement and Circular Division of Engineering Metrology

Answer 1

Correct answer is (b) 3

To explain: Three pads are present in the leveling base of autocollimator for use under the foot screws. There is no requirement to remove the autocollimator after use as the autocollimator case is constructed to take both items.