10 letters · 14 points in Scrabble
noun a surveying instrument for measuring horizontal and vertical angles, consisting of a small telescope mounted on a tripod
originFrom New Latin theodolitus (1571), perhaps containing Ancient Greek θέᾱ (théā, “sight, view”) and Arabic العِضَادَة (al-ʕiḍāda, “astrolabe, alidade”); if so, doublet of alidade.
Etymology from Wiktionary, CC BY-SA 3.0