If a barrel is poured in the vegetable garden or cistern in the shower — the water level in them will tell you a simple water-measuring device consisting of a Styrofoam float and stuck to his line or rod with the labels. For greater stability of water-measuring devices are required on the barrel to put the bar with the guide bushing.
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Once ceased to overlap the water in the cistern of the toilet. It turned out that the plastic float is stuck in the down position and through the unsealed hole for the end of the lever...
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Commercially available drills are equipped with different attachments and accessories. I suggest another attachment. With its help you can easily clear the body avtomobila against rust...