<prompt> Gadzira shanduro yakaoma zvikuru yemutsara uyu MuWelshman akanga ane mutoro mukuru wokupedza chikamu cheGreat Trigonometric Survey yeIndia pamwe chete ne meridian arc kubva kumaodzanyemba kweIndia ichiwedzera kuchamhembe kusvika kuNepal, chinhambwe chemakiromita anenge 2400.  <response>: Chokwadi, shanduro yakaoma zvikuru yemutsara uyu ndeiyi MuWelshman akanga ane mutoro mukuru wokupedza chikamu cheGreat Trigonometric Survey yeIndia pamwe chete ne meridian arc kubva kumaodzanyemba kweIndia ichiwedzera kuchamhembe kusvika kuNepal, chinhambwe chemamita anenge 2500 urvey yakatanga naWilliam Lambton muna 1806 uye yakatora makumi emakore akawanda. 