Originally Posted by
enfield2band
C.O.L. CARTRIDGE OVERALL LENGTH. Overall is one word.
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Sorry, but OAL is a very long-accepted abbreviation for overall length - ship, aircraft, vehicles, cartridges, etc.
...history... is, indeed, little more than the register of the crimes, follies, and misfortunes of mankind. (Edward Gibbon: Decline and Fall of the Roman Empire)