PT Journal AU Siyal, A TI Optical Distance Sensors SO Acta Mechanica Slovaca PY 2021 BP 28 EP 32 VL 25 IS 3 DI 10.21496/ams.2021.034 DE sensor; calibration; gauge; measurement. AB The article deals with three optical distance sensors, which are mounted on an apparatus so that they could be tested, compared & analysed. This study can be a helping hand in future for the people who want to acquire any particular detail or information on any one of these sensors. This research work adds another information about tested sensor for anyone trying to get hands on information for the three sensors or their applications. ER