toolmaker's straight edge

例句：

1. 1. The engineer used a toolmaker's straight edge to measure theangle of the angle.
   工程师用工具制造者的直边来测量角度的度数。
2. 2. Thecarpenter used a toolmaker's straight edge to mark the lines onthe wood.
   木匠用工具制造者的直边在木头上划线。
3. 3. The painterused a toolmaker's straight edge to create asmooth finish on the canvas.
   画家用工具制造者的直边在画布上创造出平滑的涂层。