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Image
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Source
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Observations
from the source
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Gallenkamp (1930s)
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Carbon rheostat
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Gallenkamp (1930s)
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Graded windings, type A
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Gallenkamp (1930s)
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Graded windings, type B
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Gallenkamp (1930s)
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Graded windings, type C
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Gallenkamp (1930s)
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Graded windings, type D
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Gallenkamp (1930s)
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Graded windings, type E and DE
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Gallenkamp (c. 1939)
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REGULATING RESISTANCES, SLATE TYPE
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Gallenkamp (c. 1939)
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REGULATING RESISTANCES, TUBULAR TYPE
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Gallenkamp (c. 1939)
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SLIDING CONTACT RESISTANCES
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Gallenkamp (1956)
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Resistance
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Gallenkamp (1956)
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Resistance
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Gallenkamp (1956)
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Resistance
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Gallenkamp (1956)
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Resistance
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Gallenkamp (1960)
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Sliding resistance
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Gallenkamp (1960)
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Sliding resistance
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Gallenkamp (1960)
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Sliding resistance
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