Abstract
Several studies and researches carried out in connection with the manufacture of harmonicas are briefly reviewed. A stroboscopic device used in tuning the harmonica reeds and a constant pressure device for sounding them during test are described. The manufacture of the reeds is discussed in some detail. It is pointed out that the primary problem in the manufacture of harmonicas is to produce them at a cost which will meet European competition. It is concluded that harmonica manufacture presents interesting problems for the physicist, engineer, and metallurgist.
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