This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
A fluid tube manometer.svg en An illustration for Utube fluid manometer with arbitrary heights indicated own Olivier Cleynen other versions cczero SVG physics Uploaded with Fluid statics Manometers
Page 2023 Free-images.com. All images are Public Domain