In the practice of the house master often there are cases associated with loosening or tightening of screws of large diameter. Without the “powerful” screwdriver not to do. Equip her with a pen, as shown and work with it will be much easier.
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CASE FOR LENSES
At small works use a magnifying glass, placed for convenience in a frame of vinyl plastic. In a square plate, 4 mm thick, cut a circular window with inside recess (groove) in which...
Power plant in a backpack
It's getting dark. The sun is slowly setting towards the horizon. Dusk is coming. It’s still early to go to bed, I want to read and play chess.
For motorists, energy for lighting is...
