Developing the NIS solid density hydrostatic weighing system up to 20 kgMohamed Hamdy, Mohamed A. Bayoumi, Ali E. Abuelezz and Alaaeldin A. EltawilInt. J. Metrol. Qual. Eng., 11 (2020) 8DOI: https://doi.org/10.1051/ijmqe/2020006