Basic of Hydraulics part 4 OF 16 | Mechanical Engineering

Hey Guys,
This is about basic of hydraulics video out of series of 16 videos we are going to publish. This animated videos are very easy to understand and will make hydraulics subject make very very easy. This video explains on following topics in detail.
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Various Pressure measurement scales
TABLE OF CONTENT :
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1) Atmospheric pressure
2) mercury barometer
3) Different pressure and vacuum scales
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[@nickayivor8432]

Thanks 👍
From Nick Ayivor from London England UK 🇬🇧

[@manviumesh8098]

Sir please explain the function of proportional valve and why it is use

[@austinfrank410]

So when the last slide is being read the absolute scale and the vacuum scale don’t line up with what is being read. Who’s right when relaying the information the reader or the writer?