This instrument was designed to be incorporated into electroencephalograph units and included an impedance meter. An electroencephalogram test detects electrical impulses in the brain via electrodes attached to the scalp.
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Beckman Instruments Photographic Services Section. “Beckman Type 945 Lead Terminator,” 1968. Beckman Historical Collection, Box 86. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/pg15bf28j.
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