Been working on a new version of the rotary viscometer, after many design changes, the result is this. A rotary viscometer bridged with a rotary reaction strain gage. Guess it’ll work. Here are some pictures.

I’d say a bit more but I’ll wait until the design is a little more fleshed out, and of course, remember that this design isn’t finished since the motor at the back obviously doesn’t float in mid-air.