Telescopic Alidade and Blade

W. & L.E. Gurley, Troy, New York


about 1900

Wooden case, with mounts covered in green velvet and brass mount for the alidade and one capstan wrench; blade and sight veins of brass painted black; level on telescope marked 10-5-5-10, circle divided to degrees, vernier reads to 0.1 degrees, alidade mounts on one of the veins of the blade. Requires plane table for use.

Case: 16 × 5 in. (40.6 × 12.7 cm)

Overall: 3 1/2 in. (8.9 cm)

Overall: 9 × 15 × 2 3/4 in. (22.9 × 38.1 × 7 cm)

Overall: 8 × 9 in. (20.3 × 22.9 cm)

Hood Museum of Art, Dartmouth College: Allen King Collection of Scientific Instruments, Hood Museum of Art, Dartmouth College



North America, United States


20th century

Object Name

Scientific Instrument: Surveying


Scientific Instrument

Scientific Instrument - Surveying

Not on view

Published References

Similar device depicted in Gurley 1893 brochure for World Columbian Exposition.


Department of Earth Sciences, Fairchild Hall, Dartmouth College; given to the Allen King Collection of Scientific Instruments, October 2007.

This record was created from historic documentation and may not have been reviewed by a curator; it may be inaccurate or incomplete.

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