Browse Items (68 total)

DSCN0267.JPG
Wood, glass, film

Black rectangular frame with two metal eye hooks on the top. Hung in window, wooden frame, image of moon sandwiched between two pieces of glass and a light diffusor. Illuminates print using light from outside. Seven were made…

Willis Pendulum Astrolabe
The Willis Pendulum Astrolabe was used primarily by the armed forces to determine latitudes and longitudes. The astrolabe is stored in a large green wooden box. It is marked “PENDULUM ASTROLABE David White Co. Milwaukee Wisc USA, No. 65649,…

Brashear visual spectroscope
Wood, brass, glass

Comes with large wooden box with hinged lid (24” x 14” x 8”), 12”tall stand (obs 726), and accessories. It includes a dense flint prism and a reflection diffraction grating. Crosshairs and a precise scale permit the…

Alvan Clark Polarizing photometer
Wood, brass, glass

Wooden box with hinged lid, barlow adapter, brass ring. Box measures 30” x 9” x 9”. The photometer is 24” long.

The visual photometer utilizes the polarizing properties of doubly-refracting crystals to measure…

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IMG_0276.JPG
Wood, metal, glass

Wooden mahogany case, there was a spare wooden case, height 59.25 cm, width 44 cm, depth 20 cm. The clock is now in the collection of the Adler Planetarium in Chicago

"The Riefler clock has two interesting characteristics. …

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Keuffel & Esser sextant and box
Wood, metal, glass

Sextant:
Wooden box with hinged lid, inside includes Keuffel & Esser paper label and “obs 15” mark. Sextant matched with artificial horizon A214.2.

Black metal frame, wood handle, silver scale, maker marked on index…

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Bausch, Lomb, Saegmuller Company sextant
Wood, metal, glass

Metal black frame with wood handle and silver scale. Horizon mirror is broken, includes 4 index filters, 3 horizon filters, 3 brass telescopes, 2 lens caps, wooden handle, 6” radius on scale, maker and model 4323 marked on…

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Newton & Company sextant
Wood, metal, brass

Hinged box with lock, missing handle, inside lined with green felt, green paper Newton label. University tag crossed out in pen.

Sextant valued in 1908 estimated $50. Engraved on arc “Newton + Co 3 Fleet Street London.”…

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Brandis & Sons sextant
Wood, metal, glass

Wood box, 9 7/8 x 9 7/8 x 5 ½ inch, with hinged lid, two hook latches and metal handle. Maker’s laminated paper label and university ID tag on inside. While the last inspection date on this sextant is 1939, the last sextant…

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Bendix Aviation Company sextant
Wood, metal, glass

Black aluminum frame, wood handle, one telescope, no filters, micrometer wheel on vernier scale, arc is black with white engraved scale from 0 to 140. Marked on index arm “U.S. Navy Bureau of Ships ETS Sextant, Mark 2 Mod 0…

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