The article gives an overview of the first optical theodolites. which marked a major milestone in the development and use of surveying instruments. Their appearance is connected to the name of the famous constructor Heinrich Wild and had a immeasurably positive impact on the entire industry of surveying instruments. that is still felt today. https://www.diegojavierfares.com/save-now-Caire-SeQual-Eclipse-Battery-Cartridge-for-Eclipse-3-5-Concentrators-top-grab/