Clockwork x-ray timer
Maker
Liebel-Flarsheim Company LLC (estab. 1917)
Date
1920
Description
Black bakelite hand held clockwork timer, with aluminium dial marked 0-15 set and arrow indicates turning direction. White stop start button on top. Hook for hanging up on machine cabinet. The 'cut off' at the preset time is not automatic of pressure on the knob is released the the timer stops and can be restarted to complete by a repress, current still flowing.
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