prokopetz:kikikabob:setheverman:gifsofprocesses:An angular crank in motion. what the fuck?? what the
prokopetz:kikikabob:setheverman:gifsofprocesses:An angular crank in motion. what the fuck?? what the FUCK??? WHAT THE FUCK???? WHAT THFun fact: if you replace the crank handle of this device with a pen, you get a trammel of Archimedes, a drafting instrument that draws perfect ellipses in the same way that a compass draws perfect circles. -- source link