Question

Which of the following is not correct about combination set?

(a) A squaring head is permanently fixed on the scale

(b) Combination set can be used for layout work

(c) Interchangeable heads are present in a combination set

(d) Can be used in metalworking

The question was posed to me during an online exam.

This intriguing question originated from Combination Set topic in portion Linear Measurements of Engineering Metrology

Answer 1

The correct choice is (a) A squaring head is permanently fixed on the scale

The explanation: Combination set has a scale on which heads are attached these heads are interchangeable which can slide along its length. They are not permanently fixed. They can be used for metalworking also.