Used to weigh extremely small quantities of materials (especially radioactive materials). The Carmichael microbalance used beams and pan supports made of fused quartz. Twisting of the fibres rather than tilt of the beam was used to measure extremely small quantities to unprecedented accuracy.

Made by National Research Council (Atomic Energy Project)
Canadian Heritage Information Network, Canada Museum of Science and Technology, Musée de la civilisation, Stewart Museum, Canadian Medical Hall of Fame, Museum of Health Care at Kingston, University Health Network Artifact Collection, University of Toronto Museum of Scientific Instruments, University of Toronto Museum Studies Program, Suzanne Board, Dr. Randall C. Brooks, Sylvie Toupin, Ana-Laura Baz, Jean-François Gauvin, Betsy Little, Paola Poletto, Dr. James Low, David Kasserra, Kathryn Rumbold, David Pantalony, Dr. Thierry Ruddel, Kim Svendsen
1950 - 1952
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