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heater, kettles

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Plate 8048-A. Efficient heater measurements. [illustration].

Plate 8048-A. Efficient heater measurements. [illustration].

Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description

Plate 8046-A. Efficient heater construction.

Plate 8046-A. Efficient heater construction.

Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description

[Plate 8045-A. Efficient heater set up vertically.]

[Plate 8045-A. Efficient heater set up vertically.]

Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description

Plate 140-X. Illustrates three kettles set in a hot water tank through which hot water is being circulated from a separate heater or other device.

Plate 140-X. Illustrates three kettles set in a hot water tank through...

Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description