text: does anybody know anything about this? i have an electromyography machine that i saved from the dumpster behind a local medical office.  i like to think that it was used for shock therapy but more likely muscle stimulation therapy. for my purposes, it is an outdated, probably non-calibrated, slow (0.05 sec) four trace oscilloscope and maybe a working signal / waveform generator.  it also happens to have some interesting cabinet space.   i have none of the probes / pads that came with this device.  when the ‘stimulator’ drawer is seated, there are no traces.  there are also two transistors or fets in the drawer that are slightly scorched.    the four dials to the left of the crt each move one trace up and down.  the buttons across the bottom control the speed of the trace.  the dial on the right labeled x-shift moves all four traces across the screen.  i have yet to find the action caused by other switches or buttons on the crt panel.  ask for phots, i will post some when i fugure out how. yes let me see what it looks like.. i may be able to tell you what the heck it was for.