The Turn Of The Century Electrotherapy Museum http://www.electrotherapymuseum.com H. G. Fischer Model 200 Short Wave Diathermy Machine 27120 KC (27.120 MHz) (Many thanks to the H.G. Fischer family for donating this - it was formerly owned by Warren Fischer, son of H. G. Fischer) A sentimental Diathermy Machine for us - personal machines from inventors are always special! As usual, it isn't often we find later model Diathermy Machines. True to all things Fischer, built like a tank! And a massive tube! Vacuum condenser Large vernier adjustment cap Power Transformer is almost a foot long!