"Owens Liverpool" and "1795"
radius 14 inches
Albert R. Crittenden, a manufacturer of marine hardware in Middletown, Ct.,
gave this octant to the Smithsonian in 1882. It has an ebony frame, flat brass
index arm, and ivory name plate. The ivory scale is graduated every 20 minutes
from -2o to +99o and read by vernier to single minutes of arc. There is also a back sight and a back horizon glass that can be used to measure angles greater than 90o. The design of this octant is consistent with the date 1795.