Records come in three standard sizes.
Width of a vinyl record.
The size of disc varied over time with 10 inches eventually becoming a popular size.
A better way to group these discs and tell them apart is the speed in revolutions per minute or rpm at which they spin while playing on a turntable.
To compete with the lp boxed albums of 45s were issued along with ep extended play 45s which squeezed two or even three selections onto each side.
Inventing the 33 yet few used it by the time 78 became standard new methods of audio recording had emerged.
For singles covers of 7 inches are common because of the format s smaller size.
7 inch 10 inch and 12 inch.
The number of grooves joining successive bands on a record shall not be less than 16 per inch.
Vinyl record sizes differ based on how much music is stored on the surface of the disk.
Dimensional characteristics 78 rpm phonograph records for home use 10 records.
It was introduced by rca victor in 1949.
The lp was soon confronted by the 45 a 7 inch 180 mm diameter fine grooved vinyl record playing at 45 rpm.
Vinyl record album covers are usually 12 inches by 12 inches for lp albums.
At a certain point records can become cramped with grooves and have to expand in size to accommodate the extra music play while maintaining the quality of the audio.