Phonograph "gramophones" or "talking-machines". His "gramophone record" was the first disc record to be offered to the public. They were five inches (12.7 cm) in diameter and recorded on one side only. Seven-inch (17.5 cm) records followed in 1895. Also in 1895 Berliner replaced the hard rubber used to make the discs with a shellac compound. Berliner's early records had poor sound quality, however. Work by Eldridge R. Johnson improved the sound fidelity to a point where it was as good as the cylinder. By 1901, ten-inch (25 cm) records were marketed by Johnson and Berliner's Victor Talking Machine Company, and
Diameter not display correctly, however, since many fonts do not include it. In many situations the letter ø (the Latin small letter o with stroke) is an acceptable substitute, which in Unicode is . It can be obtained in UNIX-like operating systems using a Compose key by pressing, in sequence, and on a Macintosh by pressing (the letter o, not the number 0). In Microsoft Word the diameter symbol can be acquired by typing 2300 and then pressing Alt+X. In LaTeX the diameter symbol can be obtained with the command codice_1 from the wasysym package. The diameter symbol ⌀ is distinct