RPM

Revolutions Per Minute (RPM) is a frequency unit, used to measure rotation speed.

Vinyl records we manufacture can be played at 33¹/₃ RPM or 45 RPM.

While 33¹/₃ RPM allows for longer playing times, 45 RPM allows for higher sound quality.

33¹/₃ RPM is sometimes (incorrectly) abbreviated as just 33 RPM.

See Also

• Wikipedia article on RPM: http://en.wikipedia.org/wiki/Revolutions_per_minute