Error of the day
Error of the day: A term used in artillery practice to denote the amount of correction which must be made in the elevation of a big gim on account of the temperature of the atmosphere, the pressure of the barometer and the quality of the light. These calculations have been brought to such a pitch of perfection that the amount of error requiring correction after a trial shot at a distance of 6,000 yards may not amount to a few feet. 
References / notes
- Various contributors (1914). The War Book-of-Facts. 2nd Edition. A.W. Shaw Company, London p.141.
Glossary of terms and customs
This page forms part of our glossary of words and phrases of the Armed Forces of the United Kingdom of Great Britain during the Great War, which also includes: technicalities, trench slang, expressions in everyday use, nicknames, sobriquets, the titles and origins of British and Commonwealth Regiments, and warfare in general. Please feel free to help expand and improve this content.
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