If you have a lot of time to measure the volume of the same liquid or granular materials, make the appropriate mark on the measuring circle, glued at the right level strips of adhesive medical tape. At the same time can be done on them and the labels which are specified died.
Recommend to read
“FLYING WING”: THE GLIDER, TIMER
Successfully participated in Izhevsk in the Russian tournaments (1978) on experimental models of type "a flying wing" command of Leningrad. All the participants become winners. ...
THE FIRE IN THE BARREL
On a country or a plot over time, accumulate debris that owners tend to burn in the fire, that is unsafe in the fire relation. Much better for these purposes to have a special stove,...