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From the given scale below, what is the length of PQ?

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in Engineering Drawing by (687k points)
From the given scale below, what is the length of PQ?

(a) 3 yd 2 ft 0”

(b) 3 yd 1 ft 10”

(c) 3 yd 0 ft 10”

(d) 4 yd 2 ft 0”

I had been asked this question in a national level competition.

My doubt stems from Diagonal Scales topic in chapter Scales of Engineering Drawing

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The correct choice is (b) 3 yd 1 ft 10”

The explanation is: The distance from the 0 on the horizontal to the point Q is 3 yards. In the feet scale, the point P lies on 1 feet and in the inches scale, the point P lies on 10 inches. Hence, the length of PQ is 3 yards 1 foot 10 inches.

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