Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Kuti kumwe kuedza kunofanira kuitwa pakuedza kwakataurwa kuRoyal Society muna 1772 naNevil Maskelyne, Astronomer Royal. Akataura kuti kuedza kwacho kwaizo"kudza nyika kwayakaitwa" uye akakarakadza Whernside muYorkshire, kana kuti Blencathra-Skiddaw massif muCumberland senharidzano dzakakodzera. The Royal Society yakaumba Komiti Yokukwezva kuti ifunge nezvenyaya yacho, ichigadza Maskelyne, Joseph Banks naBenjamin Franklin pakati pemitezo yayo. Dare racho rakatuma nyanzvi yezvomuchadenga uye muongorori Charles Mason kunotsvaka gomo rakakodzera. Pashure pokutsvaka kwenguva refu muzhizha ra 1773, Mason akataura kuti munhu akanakisisa aiva Schiehallion (ipapo akanyorwa Schehallien), 1083 m (3,553 ft) yakakwirira iri pakati peLoch Tay neLoch Rannoch muCentral Scottish Highlands. Gomo racho rakanga rakaparadzaniswa nemakomo ari pedyo, izvo zvaizoderedza simba rawo rokukweva zvinhu, uye makomo aro aiva akaenzana kumabvazuva nokumavirira zvaizoita kuti kuverenga kwacho kuve nyore. Materu ayo ari kuchamhembe nokumaodzanyemba aizobvumira kuti kuedza kwacho kuitwe pedyo nomusimboti wakakura kwazvo, kuchiwedzera simba rokutsauka. Nenzira yakafanana, gomo racho rinenge riri pakati chaipo peScotland. Zvisinei, Mason akaramba kuita basa racho iye pachake nokuda kwebasa raaipiwa reguinea rimwe pazuva. Naizvozvo basa racho rakawira kuna Maskelyne, nokuda kwaakapiwa zororo renguva pfupi pamabasa ake soMuzvinafundo weNyeredzi woUmambo. Akabatsirwa mubasa racho nenyanzvi yemasvomhu uye muongorori Charles Hutton naReuben Burrow, nyanzvi yemasvomhu yeRoyal Greenwich Observatory. Boka revashandi rakarongwa kuti rigadzire nzvimbo dzokucherechedza nyeredzi dzevazivi venyeredzi, uye kuti ribatsire pakuongorora. Chikwata chesainzi chakanga chakanyatsogadzirirwa: zviridzwa zvayo zvemuchadenga zvaisanganisira 12 in (30 cm) bhurasho quadrant kubva muna 1769 kupfuura kwaCook kweVenus expedition, 10 ft (3.0 m) zenith sector, uye regulator (precision pendulum clock) yekuverenga nguva yekucherechedza nyeredzi. Vakawanawo theodolite necheni yaGunter yokuongorora...  Mubvunzo: Dare ripi rakaumbwa neRoyal Society raisanganisira vanhu vakakurumbira vakadai saJoseph Banks naBenjamin Franklin?
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