Telescope

Catalogue number:
PH*309651

Inscriptions:
"U.S. NAVY / OFFICER OF THE DECK SPYGLASS / POWER 12½ / KEUFFEL & ESSER C^O N.Y. / N 3224"

Dimensions:
aperture 1.25 inches; length 16.75 to 22.275 inches

Discussion:
This telescope has an achromatic objective, a two-draw brass body covered with brown leather, and an amber-colored solar filter. The U.S. Coast & Geodetic Survey transferred it to the Smithsonian in 1929.

Ref: Keuffel & Esser, Catalogue (New York, 1921). P. 413.

Further Information:

Keuffel & Esser
Telescope