2012.004.187
Print, Photographic
Photograph. Sepia-toned albumen photo of an equatorial sextant. A partially readable inscription along the upper ring of the sextant shows "Burt & Watson Makers, Detroit." A handwritten note on the verso shows "Patented Nov. 4, 1856, Patent 16002. William A. Burt's Equatorial Sextant."
Request ImageRelated Records
Booklet
Description and Use of the Equitorial Sextant
