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Theodoric · 11-08-2005, 21:32

The thread titled "Magic Eye" brought back memories of magic eye detectors. Essentially they were small, valve-like devices that were used as null detectors in bridge equipment. My recollection is of their use in a Mullard (I think) conductivity bridge. The user would see a small, circular window. In this there was was what looked like 2 glowing green segments of circles, apex to apex. As the bridge was brought into balance by twiddling the large Bakelite knob the segments would pass through a minimum size.

11-08-2005, 21:32	#1
Theodoric Inactive Join Date: Jun 2003 Location: London Posts: 2,974	The original magic eye The thread titled "Magic Eye" brought back memories of magic eye detectors. Essentially they were small, valve-like devices that were used as null detectors in bridge equipment. My recollection is of their use in a Mullard (I think) conductivity bridge. The user would see a small, circular window. In this there was was what looked like 2 glowing green segments of circles, apex to apex. As the bridge was brought into balance by twiddling the large Bakelite knob the segments would pass through a minimum size.