CCW key
by OH6DC
Based on idea suggested by SM4FQW
Morse code telegraphy (CW) is turned to a whole new direction with a CCW (counterclockwise) keying system:
The heart of the key is this key.
A door lock is also needed.
When the key is turned counterclockwise (CCW) the lock bolt comes out...
... and touches this piece of pc-board.
Keying wires go through the pc-board holes.
CCW key fully assembled and ready to key counterclockwise CW.