This is an original  Helicopter Type 209A-1A EGT  indicator gauge instrument with a green serviceable tag. The gauge is marked 209a-1a helicopter. The instrument is in good used condition.  It is 2 1/4 x 2 1/4 x 4 inches. 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.