Steel square
01
강철 사각형, 목공용 직각자
a measuring and marking tool with a straight edge and a perpendicular arm, typically made of steel, used in carpentry and construction for checking right angles and laying out accurate measurements
예시들
The builder double-checked the roof angles with a steel square to avoid mistakes.
건축업자는 실수를 피하기 위해 강철 사각형으로 지붕 각도를 다시 확인했습니다.



























