View Single Post
  #10  
Old 07-07-17, 01:02
David Dunlop David Dunlop is offline
Registered User
 
Join Date: Feb 2006
Location: Winnipeg, MB, Canada
Posts: 3,599
Default

Robert. I can remember those buzzers being used in Science classes at school in the 1950's, along with the big, tall, round 1.5V Telephone Dry Cell batteries made by Union Carbide and Northern Electric. Some of the batteries had brass posts with screw fasteners and others had the Fhanstock spring clip terminals.

David
Reply With Quote