Question

Which of the following is the difference between test indicator and dial indicator?

(a) Test indicator has lever type contacts

(b) Dial indicator is lighter than test indicator

(c) Dial indicator is smaller than test indicator

(d) Stylus is present in dial indicator but not in test indicator

This question was addressed to me in homework.

The origin of the question is Test Indicators in section Dial Indicators and Indicating Gauges of Engineering Metrology

Answer 1

Correct choice is (a) Test indicator has lever type contacts

To explain: Test indicators are different from the dial indicators.  The obvious difference between these two is that dial indicators have plunger-type contacts and test indicators have lever-type contacts.  Test indicators are also lighter and smaller than dial indicators.