This is an original  Beechcraft  King Air B-300 Airspeed 0-300 Knots Indicator Gauge Instrument .    It is 3 1/4 x 3 1/4 x 7 inches.   This item is being sold as a collectable and may not work. 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