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
COUNTRY MOTOR ASSISTANT
Several years ago, our family purchased a summer cottage that had not been cultivated for a long time. An attempt to dig it up by hand was unsuccessful and we were forced to hire people...
SECRETARY OF THE STUDENT
Many original equipment for studying and doing something they demonstrated this year in Moscow at the International exhibition "Technical means in educational process". Special interest...
