Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 558
ther the result of long experience in scaleconstruction than an outcome of abstract investigation. The most noteworthy of the scales claimedby Messrs. Chickering & Sons is the so-called circular scale for square pianos. By drawing the * The minimum tension is the lowest point to which a strinsr… … 536 PIANOFORTE. scale on an arc of a circle or ellipse, the distance between the strings on the hammer-line is in-creased, and thus more room is given to the hammers. In actually constructing the scale, the designer generally begins with the highest A note, whichmay be say 2 inches in length, and…
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