角曲尺

jiǎoqūchǐ
miter square (tool to measure angles)

CEDICT

Entry Composition

1 角 jiǎo
  1. angle
  2. corner
  3. horn
  4. horn-shaped
  5. unit of money equal to 0.1 yuan, or 10 cents (a dime)

classifier: 個
2 曲尺 qūchǐ set square (tool to measure right angles)