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Pair of turn pin spectacles

1823-1825

Case, probably for drawing instruments sharkskin covered wood

1816-1839

Brass double-frame sextant.

1830-1839

Mathematical sector, British, 1813-1839

1813-1839

Kaleidoscope by William Harris & Co., London, 1825

1816-1839

Waywiser by W. Harris and Co.

1816-1835

"Improved pocket chondrometer" with swan-neck pivot

1816-1839

Gunner's rule in ivory and brass

1818

Culpeper microscope in pyramidal box with trade card on door

1801-1830

brass contact goniometer

1825-1835

Micrometer achromatic refracting telescope with lens cap

1825-1835

Miniature thermometer, mercury in glass, by W. Harris and Co., 50 Holborn, London. Fahrenheit and Reamur scales; polished wood case (25mm. x 70mm). Wellcome No. B936

Traveller's Thermometer, 1813-1839

1813-1839

Kaleidoscope, with stand and accessories, in case with key, according to label made for David Brewster, by William Harris and Co., United Kingdom, approximately 1830

Kaleidoscope, made by Wm. Harris and Co. with stand and accessories

1830

Altazimuth theodolite, 6 inch, by W. Harris and Co., London, England, 1813-1839

Altazimuth theodolite, British, 1813-1839, with accessories

1813-1839