The Sciences70,000 Clocks Adjusted Free, Strong and moreBy D. H. Killeffer, F. D. McHugh, Alexander Klemin on May 1, 1937AdvertisementABOUT THE AUTHOR(S)Recent Articles by D. H. KillefferIndustrial ConsultantsThe Pilot Plant's Value to IndustryIndustry Gets NoseyRecent Articles by F. D. McHughCoal and Kilowatts, Carboloy Extrusion Process, and moreIndian Arrow Poison for Arthritis, Mental Disease, Enamels for Plastics, and moreGlycerine from Petroleum, Electrostatic Iron Ore Separator, and moreRecent Articles by Alexander KleminInstrumentation, Measurement, and ControlMust Flying be a "Racket"?Ideas in the Air