Question

Which of the following option is true about the guideways present is test indicator?

(a) Dovetail guideways are present only at the top of the housing

(b) Dovetail guideways are present only at the bottom of the housing

(c) Dovetail guideways are present at the top and bottom of the housing

(d) Square guideways are present only at the top of the housing

I had been asked this question during an interview for a job.

My query is from Test Indicators topic in portion Dial Indicators and Indicating Gauges of Engineering Metrology

Answer 1

The correct option is (c) Dovetail guideways are present at the top and bottom of the housing

To explain I would say: Dovetail guideways are present at top and bottom of the housing which permits easy movement of the mounting shanks. By simply tightening a clamp nut which is knurled they can be clamped at any desired point. No need of separate tool.