Thank you for viewing my item!    Available is a vintage Wavetek 4mHz Sweep Function Generator.    It is for the model 188.    The item powers on, otherwise has not been tested so is being sold as is parts/repair.     It has some scuffing on the case and is a vintage used electronic.    Shipping will be priority mail charges on 5 pounds in the US.    Outside the US will be calculated shipping charges on 5 pounds through global shipping program.