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Smyth's revised ozonometer

Smyth's revised ozonometer

1865
Two ozonometers and 2 diagrams of ozonometers, 1864.

Two ozonometers, components and diagrams

1864
Model of an Ozonometer, improved form, designed in 1865 by Smyth with cardboard box.

Smyth's revised ozonometer

1865
Part of two ozonometers, 1864.

Parts of two ozonometers

1864