• Encyclopaedia
• T
• T-
• T-a
• T-b
• T-c
• T-d
• T-e
• T-f
• T-g
• T-h
• T-i
• T-j
• T-k
• T-l
• T-m
• T-n
• T-o
• T-p
• T-q
• T-r
• T-s
• T-t
• T-u
• T-v
• T-w
• T-x
• T-y
• T-z

T-square

A T-square is primarily a guide for drawing horizontal lines on a drafting table. It is also used to guide the triangle that draws vertical lines. Its name comes from the general shape of the instrument where the horizontal member of the T slides on the side of the drafting table. Common lengths are 18", 24", 30", 36" and 42".

T-square

See also