Conversion. Electric shaver plant. This worker in a New England plant that normally produces electric dry shavers is now busy turning out spring collets for machine tools to be used in war production. On this Norton type C six-inch semi-automatic cylindrical grinder, he used to turn out rotor shafts for the motor of the shaver. To convert his machine to the larger grinding job, it was necessary only to exchange the normal one-inch vitrified aluminum oxide wheel for a three-inch wheel and to increase the feed of the cooling solution. This worker was used to working to a tolerance of .0002 inches on the motor shafts so he finds it simple to attain the comparatively rough tolerance of .002 inches required on this war work. Schick Inc., Stamford, Connecticut. Sourced from the Library of Congress.