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.
Recommend to read
“Aerodynamic” Tatra cars
After the end of World War I, Czechoslovakia found itself in a unique situation. It inherited a powerful industry from the Austro-Hungarian Empire, including automotive, comparable to...
STILT OARS
Rowing oars allow for powerful strokes, but where the boat is heading is not visible - the rower sits with their back against the direction of movement. The propulsion system of the...
