Theodolite By Deane Barker • March 29, 2024 • This is the common land surveyors tool, where someone looks through an eyepiece at specific points to measure angles and determine land boundaries. Why I Looked It Up In How Infrastructure Works: British surveyors lugged half-ton theodolites from the southernmost tip of India…all the way up the spine of the subcontinent to the Himalayas and Mount Everest…