Artifact Details


SAGE light pen

Catalog Number



Physical object


ca. 1958

Identifying Numbers

Model number III Stamped onto left side of barrel
Serial number 2 Stamped onto left side of barrel


overall: 3 1/4 in x 7 in x 83 in; overall: 3 1/4 in x 12 in x 11 1/2 in


This is a light pen from SAGE. It is actually shaped like a gun with a cylindrical handle, cylindrical barrel, a small hole at the front of the barrel, and a microswitch trigger at the rear of the handle covered with a copper colored metal strip. There is a black front cylindrical sight with a lens at the black connected to the barrel via a small cubical box, and a clear plastic rear sight that had a hole to sight through (broken off).
There are two cables connected to the bottom of the handle. One is a coax cable with a male BNC connector at the far end, and the other is has 12 color coded stranded wires with yellowed translucent sheath with a connector that has two rows of 6 bladed pins and 2 round keying pins between the rows. The connector housing also has a potentiometer adjustment protruding from it.

Both handle and barrel are gray enamel coated, while the front sight is black anodized. The rear plastic sight was painted red. The handle and the barrel are partially painted black that has been worn away




Gift of the Digital Equipment Corporation

Lot Number