Rare Chronoscope PAP Complete - Actinometer c. 1907

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Rare Chronoscope PAP (complete) - Actinometer  c.1907
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Description
Rare Chronoscope PAP (complete)
An unusual meter, patented by Paul Boucher of Paris, which produces a small paper negative of the subject. The front cap pulls off to reveal a large plano-convex lens, at the back of the meter is a magazine holding a stack of sensitive paper. The image produced can be viewed in subdued light, medium densities in the negative were compared to standard tints painted on the front of the paper-magazine. The closest matching tint and the time taken to reach that tint were then found in a table which gave the exposure time. Only four tints are present, the patent shows more.
MADE: 1907-1917 in France
MAKER: Lumière
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Glass is usually removed from frames prior to shipping as despite our best effort, carriers manage to break the glass and often the broken glass damages the artwork.
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About Poykee
Poykee was created in 2008 in Lyon, France by Sharon who followed the path of her antique dealer dad. After moving abroad she continued to explore her passion for art and antiques. We offer artworks from the 17th to the 20th centuries: Drawings, Paintings, Photographies, Prints and Manuscripts. You can contact for further information.
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