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A plain scale is made to show 4 feet and sub division is inch. To measure 2 feet and 10 inches how many divisions is to take on the right side of origin?

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A plain scale is made to show 4 feet and sub division is inch. To measure 2 feet and 10 inches how many divisions is to take on the right side of origin?

(a) 1

(b) 2

(c) 10

(d) 9

I have been asked this question at a job interview.

The doubt is from Plane Scales topic in portion Scales of Engineering Drawing

1 Answer

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Right answer is (b) 2

For explanation: Origin is at 1st division ending. 1st division is made to sub-divisions. From origin, it is divided into divisions on the right side and towards left 1st division is divided into sub-divisions. Here it is asked to measure how many divisions do 2 feet takes. It is 2 from origin to right.

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