German "Dual 1004v party" turntable from 1957.
The Dual 1004 can exchange up to 10 plates with different diameters. After pressing the start button, the gramophone starts and the tone head automatically searches for the entry groove of the record. Dual uses a patented Luxor invention for this.
AS3 change pin for 45 rpm records with 38 mm hole.
A record can be repeated again via the repeat key. Furthermore, a stop button is provided.
Accessories include a short record pin, a change spindle and a centering piece for 45 rpm records.
DUAL emerged from the 19th century clockmaking company of the Steidinger family in St. Georgen in the Black Forest. In 1907, Josef Steidingen founded a new company there, "Gebrüder Steidinger, Fabrik für Feinmechanik". The company makes, among other things, gramophone springs.
In 1911, Josef left this company and founded the "PERPETUUM Schwarzwälder Federmotoren und Automatenwerke". In 1927, 1500 gramophone engines were already being produced per day. Emile Knecht is designing a new drive unit in which an electric motor drives a spring motor, the so-called DUAL motor. This will be further developed under the leadership of Herman Papst. An electric tone head was also developed, so that the Dual gramophone was born in 1937. In 1949, Dual introduced the record changer model 1000 at the Berliner Funkausstellung. The 1002 (with 3 speeds) was released in 1952, followed by the predecessor model 1003 in 1955.