Question

What is the purpose of slow motion screw in precision microptic clinometer?

(a) To set tool head initially

(b) Same function as of locating face

(c) Final adjustment to centre the bubble

(d) Measure angle between the surfaces

I got this question by my school principal while I was bunking the class.

Origin of the question is Clinometers topic in division Angular Measurement and Circular Division of Engineering Metrology

Answer 1

Correct choice is (c) Final adjustment to centre the bubble

Explanation: The clinometer can be used as a precision setting tool. It can be used to set a tool head or table at a given angle. Micrometer scale is set firstly. Then the glass scale is rotated. It is to bring the relevant graduation to the index, for final adjustment the slow motion screw is used.