Alkhwaji, A.I., Muamar M. BenIsa and Hitem A. Aswihli 2024. Estimating tool life from measurements during longitudinal turning process using linear least squares. Journal of Pure & Applied Sciences . 23, 1 (Feb. 2024), 1–7. DOI:https://doi.org/10.51984/jopas.v23i1.2888.