THE BALL INDICATOR

BALL INDICATORIf, during the filling of high capacity water (e.g. drums) intended for watering the garden, throwing a rubber ball of small size, its appearance over the edge of prompts to close the valve. Thereby eliminating the need for constant monitoring of the level of a cursory glance.

 

N. SVIRIDENKO, p. Pervomayskiy, Kazakhstan

Recommend to read

  • TO DRY TO SMOKE? PLEASE!TO DRY TO SMOKE? PLEASE!
    To dry mushrooms, fruit, or smoke, for example, meat, fish — not from an ambulance. And troublesome, tiresome to make sure that the process went properly and the result was good food for...
  • FLOATING WITH A CARFLOATING WITH A CAR
    It's good to live on the bank of a wide, full-flowing river! True, this convenient transport artery often becomes an annoying obstacle to communication between settlements. A motorist...