Definition:Gallon (Imperial)/Also known as

Imperial Gallon: Also known as

The imperial gallon is also known as the UK gallon in order specifically to distinguish it from the US gallon.

Sources which are of British origin, particularly earlier ones, may refer to this unit merely as the gallon, assuming an understanding by their audience that the gallon is the imperial gallon by default.

Sources

• 1969: J.C. Anderson, D.M. Hum, B.G. Neal and J.H. Whitelaw: Data and Formulae for Engineering Students (2nd ed.) ... (previous) ... (next): $1.$ Units and Abbreviations: $1.3$ British and other units
• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $2$
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $2$
• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): gallon Symbol: gal.${}$: 2.
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): gallon Symbol: gal.${}$: 2.