back cover of Every Boys Hobby annual 1937 on a wood effect background


The Stroh violin or Stroviol is a type of stringed musical instrument that is mechanically amplified by a metal resonator and horn attached to its body. The name Stroviol refers to a violin John Matthias Augustus Stroh, an electrical engineer in London, invented the instrument in 1899.


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Photo credit: © Hugh Williamson / Alamy / Afripics
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