Chinese foot-measure, in rosewood, Chien-Lung period, 1736-1796, showing four ancient Chinese feet ("Ch'ih"). Length 12.4"; 5/8 sq. section Chinese foot-measure, Chien-Lung period Weighing & Measuring
HF Testing device manufactured by W. Edwards & Co., England, c. 1960, 6 x 12 x 12 inches, HF tester Electronic Components c. 1960
Two paper discs, with a scale around the outside from vacuum tubes Vacuum tube measuring disc Electricity and Magnetism 1898
Flow curve recorder unit with plastic cover and wire connector, for Ferranti-Shirley Viscometer. Manufactured by Ferranti Ltd, Oldham. Viscometer Flow Curve Recorder Unit Scientific Instruments & Research 1958
