This is an original WW2 USN, USMC, AAF Aircraft Navigator's Bendix Bubble Type Sextant AN-5851-1 With Case. This is a nice piece of old style navigation. The Sextant appears complete but I have no way to test it. It has a wind up timer that does work. It is 10  x 11 x 11 inches and weighs 19 pounds. This item is being sold as a collectible. Payment should be received within 10 days of auction closing unless prior arrangements have been made. Buyer to pay actual shipping. AZ residents add 6.7% sales tax. Thanks for looking at my auction.