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Scale Buoy

Scale Buoy, Patent Number 391 865, with copper alloy stand and glass base for stand, unsigned, British, 1930-1940. It was claimed that the use of a Scale Buoy could prevent scale in a boiler.

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Glass base

Glass base

1930-1940
Copper alloy stand

Copper alloy stand

1930-1940
Scale Buoy, unsigned, British, 1930-1940. It was claimed that the use of a Scale Buoy could prevent scale in a boiler.

Scale Buoy, which the use of was claimed could prevent scale in a boiler

1930-1940