Vintage Manual Sonometer antique theater lighting This piece is one of

This piece is one of a number of black velvet clown paintings that seemed to be produced in the 1950s and 1960s for unknown reasons

Jacob Loeb was the uncle of Richard Loeb who

MM - C-5734 - 100523

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Vintage Manual Sonometer antique theater lighting This piece is one ofc. 1950s 1960s; W. M. Welch Scientific Co. Chicago Hand crank sonometer, a musical and scientific laboratory instrument used to measure musical instrument string tension and wave mechanics. It works as such (from NYU): The sonometer lays flat on a large surface. There is a meter stick attached for reference. Strum the strings freely or hold down the string in different positions like a capo, to achieve different notes. Strike the tuning fork and strum