Air eraser: Miniature sandblasting hand appliance, using compressed air and pumice for removing superfluous lithographic images from the plate. It erases the images without destroying the texture of the plate.

• 擦版气笔:手提的小型喷砂器，用压缩空气和浮石粉去除平版上多余的印纹。它擦去画像而不影响版面上的纹理。