Photoelectric recorder for measuring deformations of buildings and hydraulic facilitiesNematjon Zaxidov, Shoakbar Shoyusupov, Dilnoza Pulatova, Shahzod Rahmatillayev and Doniyor GafurovE3S Web Conf., 264 (2021) 03066DOI: https://doi.org/10.1051/e3sconf/202126403066