Dr Crabtree's Patent Observatory Magnifier

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Believed by some to have been designed in 1804 by the legendary British inventor and polymath Joseph Crabtree, the functional simplicity of his brass-and-glass domed "Observatory" magnifier has never been surpassed or needed modification.

Magnifies about 3x. Diameter 2", height 1".

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Weight 0.000000
Availability IP
Department Maritime
Format Accessories for Travel
ISBN 5024700717612
Publisher Nauticalia Ltd
Section Maritime Instruments
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