字じ消けし板ばん

noun

eraser shield

A thin metal or plastic stencil used to erase precise areas of pencil or ink without damaging surrounding work. Common in drafting and illustration.

• 製せい図ずのときは字じ消けし板ばんを使つかうと細こまかい線せんだけを消けせる。

  When drafting, using an eraser shield lets you erase only fine lines.