Question

Which of the following is necessary for the working mechanism of dial indicators?

(a) High magnification ratio

(b) Low magnification ratio

(c) Moderate magnification ratio

(d) Good magnification ratio is achieved by using gear and pinions in a large area

This question was posed to me in an interview for internship.

The above asked question is from Working Mechanism of Dial Indicators in division Dial Indicators and Indicating Gauges of Engineering Metrology

Answer 1

Right option is (a) High magnification ratio

For explanation: High magnification ratio is important in this instrument which is achieved by the use of an arrangement of gears and pinions in a small area. Gear train is arranged in a manner similar to a clock movement.