Here are a couple of unusual dial plates. 11 and 12 hole, enamel.
Not sure what could be done with either of these, apart from display.
Does anyone recognise them or have any images of these in use?
the 11 hole used to be used on radio equipment, the 12 hole might have been also.
http://www.classicrotaryphones.com/forum/index.php?topic=22789.0 (http://www.classicrotaryphones.com/forum/index.php?topic=22789.0)
http://www.classicrotaryphones.com/forum/index.php?topic=10597.0 (http://www.classicrotaryphones.com/forum/index.php?topic=10597.0)
Dials and SxS (and other) equipment were used in many manual and automatic control systems from missile launching to traffic lights. Many of the dials used in these applications had more, and some had less finger holes than telephone dials.
The Tele-Chec system was an intercom and empty seat reporting system that was used by theatre ushers. The dial centre in Paul's first image is from a Tele-Chec telephone. I think the dial itself and the telephone are from something else.
The second of Paul's images is a dial from a Collins radio control-system.
Jack