曲尺

set square (tool to measure right angles)

surname Qu

bent / crooked / wrong

tune / song / CL:支[zhi1]

variant of 麴|曲[qu1]

yeast / Aspergillus (includes many common molds) / Taiwan pr. [qu2]

one of the characters used to represent a musical note in gongche notation, 工尺譜|工尺谱[gong1 che3 pu3]

a Chinese foot / one-third of a meter / a ruler / a tape-measure / one of the three acupoints for measuring pulse in Chinese medicine / CL:支[zhi1],把[ba3]

staircase with right-angled turn / L-shaped staircase

sliding bevel (to measure angles)

universal bevel (to measure angles)

miter square (tool to measure angles)

steel set square (tool to measure right angles)