_ is mainly used to designate the letters and numerals in engineering drawing a) height b) thickness c) both a and b d) none of these
Answers
Answer:
The correct option is (c) both (a) and (b).
Answer:
option (a) Height is mainly used to designate the letters and numerals in engineering drawing.
Step-by-step explanation:
The height of the letters serves as an identifier. Ascenders are the stems of lower case letters like b, d, h, etc. that extend upward. Descenders are the stems of lowercase letters like g, j, p, q, y, etc. that extend downward.
They are 2.5, 3.5, 5, 7, 10, 14, and 20 millimeters. Lower case letters range in height from 2.5, 3.5, 5, 7, and 10 millimeters (without the tail or stem).
Typically, the letters' height is maintained as follows:
Drawing numbers should be 8, 10, or 12 mm, with the letter in the title block designating the cutting plane or section.
The drawing's title should be 6 or 8 millimeters long.
Headings for sub-titles should be 3, 4, 5, or 6 mm.
Legends, schedules, a materials list, and dimensions should all be noted with 3, 4, or 5 mm notes.
Tolerances and alteration entries should both be 2 to 3 mm.
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