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Description
Vintage 20th century linear sliding rheostat - 15700 Ohms - 2 Amps - James G. Biddle Co, Philadelphia, PA - Patent No. 2000849 - 94293.
"The sliding rheostat is one of the commonly used devices in electricity. It changes the resistance by changing the length of the resistance wire of the connected circuit, thereby gradually changing the current in the circuit." (Source: Utmel Electronic)
Condition
Good Overall - Gentle wear
Dimensions
21.5" x 4" x 5.25" (Width x Depth x Height)