ClipArt ETC
A device used to transfer drawing onto opaque paper using bright tin, two showcase lamps, and plate glass. The drawings can be copied in pencil on heavy paper or Bistrol—board.

Transparent Drawing Board

A device used to transfer drawing onto opaque paper using bright tin, two showcase lamps, and plate…

A blue print frame used to make copies of mechanical drawing. The process is done by exposing a sensitized paper in contact with the tracing paper to the light source in the frame. A chemical reaction takes place when washing with water to create a strong blue color, creating the image.

Blue Print Frame

A blue print frame used to make copies of mechanical drawing. The process is done by exposing a sensitized…