Mark's Project
Mark is assembling the four-bar linkage that he'll use on his "Robot Duster" invention. (He's using the crank-rocker configuration.)
A country, a family, a year
Mark is assembling the four-bar linkage that he'll use on his "Robot Duster" invention. (He's using the crank-rocker configuration.)
(c) 2008-2009 Matthew Kuperus Heun