oldbookillustrations:
Altitude and azimuth instrument. From The great Centennial exhibition critically described and illustrated, by Phillip T. Sandhurst, Philadelphia and Chicago, circa 1876. (Source: archive.org)
Altitude and azimuth instrument.
From The great Centennial exhibition critically described and illustrated, by Phillip T. Sandhurst, Philadelphia and Chicago, circa 1876.
(Source: archive.org)
168 Notes
By Phillip T. Sandhurst - circa 1876.
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