Mercury thermometer, as we know the fragile and the contained mercury is also very dangerous. So if there is no standard paper sheath for it that will help out a makeshift rubber tip. This mini-case you will make safe and water thermometer.
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EXTENSION TUBE-DOUBLE
To connect to the same outlet multiple appliances generally use twins, tees and various extenders. Their designs are very diverse. But here's another one, in my opinion, the simplest....
SHIPOVANNYE MACHINE
A lot of trouble delivers the movement of the machine along the surface of the workbench during operation. This can get rid of the crafting for each stanochek stand with four spikes, and...
