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Which grade of pencil is used for drawing arrowheads?

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in Civil Engineering Drawing by (128k points)
Which grade of pencil is used for drawing arrowheads?

(a) 2H

(b) 2B

(c) 7H

(d) H

This question was addressed to me in homework.

My doubt is from Lines, Lettering and Dimensioning topic in portion Lettering Practice, Scales & Curves of Civil Engineering Drawing

1 Answer

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Best answer
Correct option is (a) 2H

Explanation: Arrowheads resembles the extent of dimensions. It should be sharply defined and uniform throughout the drawing. Generally, 3 mm in length is used. For such precision small diameter pencils are used, hence 2H is used as arrowheads.

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