Milliampère meter
In wooden box with hinged lid, nickel-plated ampère meter and two binding posts with the texts "12 Milliamp" and "+". Capable of measuring currents up to 12 milliamps. Made approximately in 1925, serial number 20181. The meter was sold in 2022.
In 1905 the company Deutsche Tachometerwerke (Deuta) was established. In the beginning the company devoted itself to making speedometers for trucks. In the 1920s, the company "Nadir"  was acquired. This company made electrical measuring instruments for laboratories and other measuring equipment, including tube testers. The company also made a radio, the Musiktruhe from 1926. Deuta still exists and is now making safety systems for trains.

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