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While dimensioning a feature with a square cross-section, what should be added before the dimension figure?

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While dimensioning a feature with a square cross-section, what should be added before the dimension figure?

(a) SQUARE

(b) SQ

(c) Sq

(d) Nothing

This question was addressed to me in an online interview.

My query is from Terminology of Dimensioning topic in chapter Lines, Lettering and Dimensioning of Engineering Drawing

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Best answer
The correct option is (b) SQ

The best I can explain: While dimensioning a feature with a square cross-section, ‘SQ’ should be added before the dimension figure to indicate its shape. For dimensioning the base circle of a cylinder, the symbol ‘φ’ is added before the dimension figure.

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