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Burroughs 6700 beam switching tube. This is surrounded by a magnet - I had to photograph it with a ruler instead of the usual battery as the battery kept sticking to the tube!

See also the VS10G (which also has information about these devices), and the BX1000 which is a more modern version with internal magnets.

6700 6700 base

This file was last modified 14:40:53, Tuesday September 02, 2014