Image: Water-saving lock downwards
Size of this PNG preview of this SVG file: 540 × 225 pixels. Other resolution: 320 × 133 pixels.
Original image (SVG file, nominally 540 × 225 pixels, file size: 6 KB)
Description: principle of a water-saving lock using 3 basins. (moving downwards)
Title: Water-saving lock downwards
Credit: Own work
Author: RokerHRO
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: https://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes
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