This is an original USAF, USN & USMC F-4 Phantom II fighter aircraft pilot's VSI vertical speed indicator gauge instrument. This gauge is lighted.  This same instrument is used in the A-7, F-8, A-6 and several other aircraft.  The gauge is in good condition.  It is 2 1/2 x 2 1/2 x 9 inches.  This item is being sold as a collectible. Payment must be received within 10 days of auction closing unless prior arrangements have been made. Buyer to pay shipping. AZ residents add 6.7% sales tax. If you have any questions please contact me via e-mail before bidding. Thank you for your interest in my auctions.