Oil content meter simulation test and OWS operation

[@najinkunnath6009]

An informative stuff ! Good job.

[@mdtajulislam4339]

Useful simulation.

[@ams4302]

Very informative..thank u sir for yr effort...

[@faisalahmad50]

Very well shown

[@omerasan6084]

great! thank you chief

[@siddhantsnehi5321]

Put more such operational videos plz