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Wynne's Pocket Actinometer, by the Infallible Exposure Meter Co., Wrexham, c. 1905

Inventory Number 15428

Acknowledgement: © History of Science Museum, University of Oxford, inv.15428

Item type
Object
Provenance
Presented by Mr. A. T. Ryland, St Govans, Saundersfoot, Pembrokeshire.
Primary inscriptions
'Wynne's "Infallible" Exposure Meter' at centre of dial.
Dimensions
Height: 21mm Width: 82mm Depth: 57mm Weight: 112g
Inventory No
15428
Accession Number
1965-314

Description

Pocket actinometer complete in its original tin box and including an instruction pamphlet, two packets of sensitive paper and a list of photographic plate speeds which is dated February 1905. The instrument and box are signed "Wynne's "Infallible" Exposure Meter". The surface of the box has deteriorated and is not entirely legible.

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