Coast Artillery EE-91 Phone - The EE-91 is a wall mounted metal telephone used by the coast artillery. It's a common battery phone, which means transmitter current is obtained from the central office battery storage. It is equipped with a single gong ringer, a hand generator for signaling magneto lines and a antisidetone circuit. #Army #Artillery #Battery #Casemate #Coast_Artillery #EE91 #EE91_Phone #Military #Plotting_Room #WW2 #WWII
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