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Demainbray's polemoscope

1701-1752

Compound microscope

1701-1723

Visibility meter

circa 1941

Balloon release mechanism - roller on handle

Terrestrial refracting telescope

1700-1750

Black carrying case for pair of Zoom 7x to 14x35 binoculars

1970-1979

Wollaston's polariscope No. 948

1850-1899 (estimated)

Bilham humidity slide rule for tropics, in case

1940-1945

Terrestrial telescope, 1670-1700.

1670-1700

Early Culpeper microscope

1720-1730

Telescope in Scioptic ball

Telescope in scioptic ball

Case for folding hand microscope

1831-1850

Balloon release mechanism - roller on handle with twine attached

Telescope in scioptic ball

Time globe

1880

Taper gauge with case

1770

Assmann thermometer, mercury in glass, solid stem, flat enamel back, absolute scale. By Negretti & Zambra, London. Marked MO 19138, KO 19. Scale 245 to 315, in pasteboard tube

Assmann thermometer

Astronomical telescope, 1675-1700. This is one of the earliest items in the King George III collection of scientific instruments, and was probably made by Christopher Cock of London. It has two lenses which give an inverted image and provides a magnification of about 30.

Astronomical telescope

1675-1700

Playing cards, London & North Eastern Railway, incomplete, with view of the Trossachs on back of each card, pasteboard, English, 1927-1940.

London & North Eastern Railway playing cards - Trossachs

1927-1940

Compound microscope, covered around the body with green and gold decorated parchment, fixed to brass swivel stand, which is attached to oak base, by John Marshall, London, England, 1715

Marshall's 1715 compound microscope

1715