When I ordered this board I didn't have much faith that it would do what was claimed for it. Ordering direct from our resourceful, hard-working friends in China I got the board plus 3x ultra high-Z electrodes and pads for under a fiver! "It must be junk" I hear you cry. Well, turns out it isn't!
I've just hooked it up to one of my storage scopes and am *seriously* impressed with the results I must say. It generates exactly those classic traces you see in dramas where some ailing patient's in hospital hooked up to a hundred grand's worth of fancy kit.
I bought one because I work with old scopes a lot and it would be useful to know if next time a get a 20KV belt off one of them I've done any permanent damage to the old ticker. I've taken print-outs and sent them to my GP's surgery for their records. It helps to have a reference to compare against.