Metal battery lamp

Origin: Germany Producer: Friemann & Wolf GmbH Date: 1925 Height: 30.5 cm Diameter: 10.5 com Around 1930, batteries started developing. The petrol lamp was being replaced by battery lamps. They also kept using petrol lamps for the mine gas measurements, but the battery lamp were both safer and created more light. This mine lamp consists of an upper part and a part. In the upper part is the fitting with reflector and light that is protected by a protective glass. The battery is located in the round metal housing - the battery pot - at the bottom of the lamp. Creator: Ruqin Hu Source: Objaverse 1.0 / Sketchfab