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Pair of 'Martins Margins' spectacles

1800-1825

Tortoiseshell tongue scraper, England, 1801-1850

1801-1850

Part of calibration bench ex Kew Observatory

Tongue scraper made from tortoiseshell with ivory handles, probably made in England circa 1801-1860.

Tongue scraper made from tortoiseshell with ivory handles

1801-1860
Pair of 'Martins Margins' spectacles with round convex lenses in a blued steel wire frame and turnpin sides, and with a leather-covered wooden case with brass strap hinged lid, unsigned, United Kingdom, 1800-1825

Pair of 'Martins Margins' spectacles, with brass strap hinge leather covered case

1800-1825
Mechanical thermometer (metallic type) graduated with Fahrenheit, centigrade and reamur scales, unsigned, English, in ivory and tortoise shell case, 1795-1895

Mechanical thermometer, multiscales, 1795-1895

1795-1895