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Description
Antique 1940's / World War II era Astro-Compas MK II and Transit Case. Manufacturer's Assembly Part No. D500 and D501. Contract No. AC-27901. Produced by Sperti, Inc of Cincinnati, Ohio, USA. Includes black hard sided transit case with canvas strap.
"At high latitudes where magnetic variation can be erratic and the angle of magnetic dip can be steep, magnetic compasses are essentially useless. This instrument, on the other hand, indicates true north when pointed at a known star. It was made for military use during World War II, and surplussed soon thereafter. The firm was formed to capitalize on the discoveries of the Institutum Divi Thomas, under the direction of Dr. George Sperti Sperti (1900-1991), an Italian-American inventor." (Source: Smithsonian Institute)
Condition
Good Overall - Gentle wear commensurate with use/age
Dimensions
5.25" x 4" x 8.5" (Width x Depth x Height)