Astrograph Type A-1 Air Corps US Army Sperti Vintage Equipment USA W/ Box Bulbs. Comes with two short and two long screw in sockets, metal measuring stick, two tools, astrograph, and good condition box. View photos for detailed condition.One of the bulbs is broken, and a piece of wood blocking inside the box broke off. This is a Type A-1 Astrograph, Specification 27404, as used by the US. The Astrograph was used in aircraft night-time. Navigation in which the stars provided reference points. Constellations printed onto a translucent sheet of film was rolled. Through the device under the glass plate and lit from behind. Used in conjunction with an astrocompass see P. Would provide the heading of the aircraft with respect to the.
Declination of a particular star and the astrograph would be used to. Identify which star you were using.
It was probably used during WWII for. Night flying over the Pacific.
I use a white backdrop in an effort to represent the item clearly, but colors can be slightly different in different lighting or objects may appear smaller/larger. Sometimes I can even get an item out the same day. I always offer the fastest method at the lowest price!Upgrading to a faster method is typically just a few more dollars. I do my best to describe items, but I can miss details.
Ask questions and use the photos to supplement information I provide. I appreciate your time in fully reading this description!
The item "Astrograph Type A-1 Air Corps US Army Sperti Vintage Equipment USA With Box Bulbs" is in sale since Tuesday, January 17, 2017. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment". The seller is "portlandpicker" and is located in Portland, Oregon. This item can be shipped worldwide.