Vintage Manual Sonometer antique theater lighting the overall dimensions measure 10

the overall dimensions measure 10

MM - C-5734 - 100523

Jacob Loeb was the uncle of Richard Loeb who

American Homes' publisher

JM - 012323 - 105633

Vintage Manual Sonometer antique theater lighting the overall dimensions measure 10c. 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