Folding ruler
01
折り畳み定規, 折り畳みメジャー
a measuring tool consisting of multiple segments hinged together, allowing it to fold for convenient storage and unfold to various lengths for measuring objects or distances
例
The carpenter unfolded his folding ruler to measure the length of the wooden plank before cutting it to size.
大工は木材の板を寸法通りに切る前に、その長さを測るために折りたたみ定規を広げた。
