WWII MORSE KEY FOR TRANSMITTER, 1154

Morse Key as used with the 1154 Transmitter. See Item No A0164
Sometimes called a ''Bathtub'' key.

Your comments:

• Used on Beverley and Marine craft. Some operators used their own
  .......... David Lloyd, United Kingdom, 11th of May 2016
  
  
• If the air plane was eventually hit and going down, the operator would push the spring with the roller towards the key handle - with the key down - Then the key will then be locked in transmission mode. This was used to let friendly forces track the air plane by radio direction finding systems and to guide them to the crash site, which was mostly in water.
  This way they could possibly have the approximate location to rescue surviving crew.
  This is the only key type that I know of that has this feature.
  
  
  .......... Bjorn Forsberg, San Francisco California U.S.A., 1st of May 2013
  
  
• Including a rubber diaphragm under the knob,the key's design ensured sparks from its contacts were isolated, thereby avoiding explosions caused by igniting petrol vapour.
  .......... Laurie Booth, Emsworth, Hampshire. U.K, 25th of June 2011
  
  

A0311