WW2 US Army Air Force Sextant A-10A Navigation Instrument

US Army Air Forces Sextant A-10A. Manufactured by Fairchild Aviation Corp. The Sextant is in its original case and has all the accessories with it. The batteries are probably no good now due to age and they are corroded but they was in the box so I have left them in it. The instrument is excellent condition and is very well preserved, it still has all of its black crackle finish, and the rubber eye cup is still in good shape.