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Toy pianos come in many shapes, from scale models of upright or grand pianos to toys which only resemble pianos in that they possess keys. Toy pianos are usually no more than 50 cm in width, and made out of wood or plastic. The first toy pianos were made in the mid-19th century and were typically uprights, although many toy pianos made today ...
A bookcase, or bookshelf, is a piece of furniture with horizontal shelves, often in a cabinet, used to store books or other printed materials. Bookcases are used in private homes, public and university libraries, offices, schools, and bookstores. Bookcases range from small, low models the height of a table to high models reaching up to ceiling ...
A square grand piano. The square piano is a type of piano that has horizontal strings arranged diagonally across the rectangular case above the hammers and with the keyboard set in the long side, with the sounding board above a cavity in the short side. It is variously attributed to Silbermann and Frederici and was improved by Petzold and ...
One upper and one lower front panel. The Patented Cupola Steel Frame is constructed on the principle of our Grand Pianos, with Capo-d'Astro Bar cast integrally. Height, 4 feet 6 3/4 inches; depth, 2 feet 5 inches; width, 5 feet 2 inches. Net weight, 695 lbs. Gross weight, 1015 lbs. 881/2 cubic feet, boxed." [6]
Sohmer & Co. trademark. Sohmer & Co. was a piano manufacturing company founded in New York City in 1872. Sohmer & Co. marketed the first modern baby grand piano, and also manufactured pianos with aliquot stringing and bridge agraffes, as well as Cecilian "all-inside" player pianos and Welte-Mignon-Licensee reproducing pianos.
An IKEA Billy bookshelf. Billy (stylised as BILLY) is a bookcase sold by the Swedish furniture company IKEA. It was developed in 1979 by the Swedish designer Gillis Lundgren, and IKEA have sold over 140 million units of the bookcases worldwide. Its popularity and global spread has led to its use as a barometer of relative worldwide price levels.
The other factor that affects pitch, other than length, density and mass, is tension. Individual string tension in a concert grand piano may average 200 pounds (91 kg), and have a cumulative tension exceeding 20 tonnes (20,000 kg) each.
This early grand piano version of the Disklavier lacked an official model designation and has become known as the Wagon Grand by virtue of the fact that the control unit was built into a 30-inch (760 mm) tall cabinet on wheels, this model in Japan does have a model designation of PPG-10R and it has been called DKW10. [6]