Calcomp plotter

[1][2] The Calcomp 565 drum plotter,[3][4] introduced in 1959, was one of the first computer graphics output devices sold.

A metal bar above the take-up reel allowed a finished plot to be torn off and removed.

The drum would then be advanced using the manual controls and the fresh paper end taped to the take-up reel.

A chart drive switch was provided to turn off the motorized paper supply and take-up reels for this purpose.

A Calcomp plotter attached to an IBM 1401 was used to develop Bresenham's line algorithm in 1962.

A Calcomp 565 drum plotter
Closeup of Calcomp plotter right side, showing controls for manually moving the drum. Similar controls on the left move the pen carriage.