File:Britannica Pianoforte Allen Compensating Grand Piano.png
Jump to navigation
Jump to search
Size of this preview: 326 × 599 pixels. Other resolutions: 130 × 240 pixels | 559 × 1,027 pixels.
Original file (559 × 1,027 pixels, file size: 29 KB, MIME type: image/png)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 00:57, 27 August 2009 | 559 × 1,027 (29 KB) | Bob Burkhardt | {{Information |Description={{en|1=William Allen's compensating grand piano, 1820. The first complete metal framing system applied over the strings.}} |Source=Encyclopædia Britannica, 11th ed., Vol. 21, p. 570 |Author=William Allen |Date=1820 |Permission= |
File usage
The following page uses this file: