Thank you for viewing my item!    Available is a vintage General Cement Electronic Instrument.    It is a military issue for the US Air Force in 1955.    We're calling it a signal generator but do not know for sure that is what it is.    It is for the model TS-102A.   The item is used and not tested so is being sold as is for parts/repair.    The case measures approximately 16 1/2 x 9 1/2 inches.    Shipping will be priority mail charges on 25 pounds in the US and internationall.