overall: .05 cm x 12.8 cm x 14.8 cm; 1/32 in x 5 1/32 in x 5 13/16 in
sundial or template for a quadrant
sundial or template
United States: New York
This horary quadrant is made of a brass sheet and may in fact be a template rather than a functioning instrument. There is a pinhole at the vertex but no plumb-bob and string. The front bears an hour arc marked from 7 to 11 and several concentric arcs numbered from 30 to 39. A mark scratched by hand near the center of the quadrant reads: 30-39. A mark stamped near the right edge reads: D.B.SHEAHAN. A round hole, 3 cm. in diameter, is near this. The left side extends beyond the circumference of the quadrant in an arm that is 2 cm wide. The reverse of the quadrant bears another hour arc marked from 7 to 11 and several concentric arcs numbered from 40 to 45. A mark scratched by hand near the center of this side of the instrument reads: 40-45.
D. B. Sheahan was a forger who lived around 1900. He may have been a sculptor who resided in New York City. Sotheby sold this instrument on behalf of the scientific instrument collection owned by Henry Russell Wray. Wray was a newspaper editor and manager who purchased the Colorado Springs Gazette in 1896 with Cornelius Vanderbilt Barton and William McKay Barbour.
Sotheby & Company, Catalogue of a Collection of Scientific Instruments, the Property of the Late Henry Russel Wray, London, 1959 (a copy of the catalogue is in the accession file).