Dietz Acme Inspector Lamp

The Feldfernsprecher 33 (meaning field telephone) was the standard field telephone of the war. Developed by Siemens & Halske in 1933 as an upgrade to the earlier Feldfernsprecher 26, over 1.6 million units of the Feldfernsprecher 33 were produced by more than 20 different manufacturers between 1933 to 1945. The telephone weighs 12 lbs, with the case made of bakelite, body made of light alloy, and powered by a hand crank generator. It entered service in 1934 with the Reichswehr (the national defence forces) and Reichspost (the national postal/telecom system). However, it continued to be used with the Bundespost (the state-run postal service and telecommunications) and Bundeswehr (the Federal Armed Forces) until well into the 1970s. The telephone also included 2 patch sockets and a patch cord to build small field exchanges using two or more Feldfernsprecher 33.