Giniotis, Vytautas, Donatas Rekus, and Česlovas Aksamitauskas. “Accuracy Calibration of the Bars of Levelling Meters”. Geodesy and Cartography 33, no. 4 (August 3, 2012): 102-105. Accessed November 25, 2024. https://gc.vgtu.lt/index.php/GAC/article/view/10908.