Keymograph:
Electrical E-8 student kymograph with special heavy duty motor, oil laped gear systems speeds from 0.12 mm/sec. to 640mm /sec. in 8 steps, Jerk free running, instantaneous start & stop clutch, stainless steel spindle with screw lift 15 x 15cm cylinder, with level-ling screws, pilot lamp, plug & cord.
