Square box with advertising label. Polar stereographic projection. Geocentric view. No constellation images. "Rude Star Finder". Separate North and South Hemisphere planispheres in box.
Materiaal
"THE RUDE STAR FINDER AND IDENTIFIER/H. O. 2102" ; "Washington, D. C., published Jan., 1928, at the Hydrographic Office,/under the authority of the SECRETARY OF THE NAVY."
