Johann Scheibler
Johann Heinrich Scheibler (11 November 1777 – 20 January 1837) was a silk manufacturer from Crefeld, Prussia, without a scientific background, who went on to make contributions to the science of acoustics as a self taught musicologist. He made a "tonometer" (German: Tonmesser) from 56 tuning forks as an instrument for accurately measuring pitch by counting beating, described in 1834.