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The scale of chords is used to measure _________

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in Civil Engineering Drawing by (128k points)
The scale of chords is used to measure _________

(a) Chords

(b) Lines

(c) Angles

(d) Diameter

I had been asked this question during a job interview.

My doubt stems from Scales in division Lettering Practice, Scales & Curves of Civil Engineering Drawing

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Correct choice is (c) Angles

To explain I would say: Used to read angle if there is no protractor. To draw an angle, compasses describe an arc from origin with a radius taken from the 60 mark. The required angle is copied from the scale by the compasses, and an arc of this radius drawn from the sixty mark so it intersects the first arc. The line drawn from this point to the origin will be at the target angle.

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