Surveyors Added 2 Feet to Prove Their Measurement Was Real

Mount Everest's first official measurement came from the Great Trigonometrical Survey in 1856. Andrew Waugh and his team calculated the height using trigonometric methods from over 150 kilometers away. The result was exact: 29,000 feet. But they reported it as 29,002 instead. This wasn't an error — it was a deliberate choice about how precision is communicated. A perfectly round number looks like an estimate, not a calculation. Surveyors knew this. They added two feet not to the measurement itself but to the reported figure, creating an odd number that signaled careful work. For over a century, maps, textbooks, and climbing guides all printed 29,002 as the official height. No one outside the survey team knew the original calculation had been exactly 29,000. The mountain's recorded height changed again in 1954 at 29,028 feet and in 2020 at 29,031.7 feet. Each measurement brought new technology and new answers. But the principle Waugh's team established in 1856 remained: precision has a texture. Real measurements don't look convenient. — SOURCES & CREDITS — Sources & further reading: · https://boldhimalaya.com/mount-everes... · https://www.factfiend.com/29000-feet-... Sources are cited for fact-checking purposes; their inclusion does not imply endorsement of this channel or its content. Footage from Wikimedia Commons: · Mount Everest from a plane.webm — Portraits du Monde (CC BY 3.0) (https://commons.wikimedia.org/wiki/Fi...) · Phobos transit 2 April 2022.webm — NASA (Public domain) (https://commons.wikimedia.org/wiki/Fi...) · Exaggerated Effects of Gravitational Waves on Earth.webm — LIGO Lab Caltech : MIT (CC BY 3.0) (https://commons.wikimedia.org/wiki/Fi...) Stock footage from Pexels.