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Image
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Source
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Observations
from the source
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Gallenkamp (c. 1939)
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OVENS, DRYING, hot water
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Gallenkamp (c. 1939)
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OVENS, DRYING, hot water
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Gallenkamp (c. 1939)
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OVEN, DRYING, stout copper, for the
rapid determination of moisture in coal
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Gallenkamp (c. 1939)
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OVEN, DRYING, stout copper, for the
rapid determination of moisture in coal.
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Gallenkamp (c. 1939)
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DRYING OVEN, electrically heated,
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