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A technical illustration of a mechanical water level indicator with a ping pong ball float, nylon thread, pulley, and a pointer on a circular dial with red, yellow, and green zones.

A technical illustration of a mechanical water level indicator with a ping pong ball float, nylon thread, pulley, and a pointer on a circular dial with red, yellow, and green zones.
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mechanical water level indicator system with transparent water tank, white ping pong ball float inside tank, thin nylon thread connected to float going over small pulley made from bead at tank rim, thread connected to pointer made from ice cream stick on circular dial with green yellow red zones like traffic light, simple DIY engineering diagram, technical illustration, clean white background See more

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