Comdyna GP-6 (via Matrixsynth) OK, I confess I'm a techno feticist and this analog computer spotted by Matrixsynth is the hardware porno pic of the year!!

"Each GP-6 is a self-contained unit capable of simulating linear and non-linear systems of up to four state variables. Over 2000 GP-6 analog computers have been installed in over 400 university, government and commercial research laboratories."

If you are a code junkie this is a PDF programmin guide for the G6:
USING THE COMDYNA GP-6 ANALOG COMPUTER, by Professor Ian Petersen, Department of Electrical Engineering, Australian Defense Force Academy, is an excellent presentation of programming and operating the GP-6.