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Flintlock tinder pistol

1780-1830

Pocket altimeter

1850-1900

Sorby microspectroscope in case

1871-1900

Prismatic magnetic compass, British, 1827-1848

1827-1848

Two pocket altazimuths, British, 1871-1900

1871-1900

Combined compass and clinometer, 1870.

1870

Flintlock tinder pistol with candle holder

1800-1840

Brass covered weight

1701-1800

Objective disc with 6 lenses to fit Jones type body tube support

1780-1830
Tinder pistol with incorporated candle holder on an arm protruding from the tinder well, wood handle, brass and steel mechanism, by Hollis London, English, 1790-1850

Tinder pistol with incorporated candle holder on an arm protruding from the tinder well

1790-1850
Pocket box sextant with separate black glass artificial horizon in boxwood bowl on three adjustable feet, made by Charles George Dollond, St. Paul's Churchyard, City of London, England, 1835-1845. Consists of two circular lacquered brass plates with lid that acts as a handle when used. Fitted with Inlaid silver 131° scale (-5° to 140°) with 30' divisions and a silver vernier (30’' div.). The index arm is rotated by a milled knob on the upper plate with two filter shades operated by lever. The index glass is fixed with adjustment for the horizon glass. Fitted with magnifier (single lens) on hinged 40 mm swivel arm and choice of a large and a small pinhole sight but telescope missing.

Box type pocket sextant.

1835-1845
Clinometer patent by C. A. Schmalcalder, 82 Strand, London, England, 1810-1826.

Patent clinometer, British, 1810-1826

1810-1826