This is an original Boeing B-17 Bomber Type Engines 1 & 2 and Engines 3 & 4 Oil Pressure Gauge Instrument Set . The gauges are in good condition.  Each gauge is 3 1/4 x 3 1/4 x 3 inches.  This type of instrument was also used in most  four engine bombers such as the B-17, B-24, PB4Y2. These items are being sold as is for the collector. Payment must be received within 10 days of auction closing unless prior arrangements have been made. Buyer to pay shipping. If you have any questions please contact me via e-mail before bidding. Thank you for your interest in my auctions