An open belt is rubber ring at the tape recorder or a player — it happens not so often, but because surprised. However, a good housewife can always find an old rubber glove. Select the one that is thicker, and cut with scissors right ring: timed belts ready.
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STAIRS? NO, THE CLOSET!
Furniture with doors are not always easy to use. For example, music is better to have in the cupboard, and an open rack with shelves. This facilitates access to both the instrument and...
ELLIPSOGRAPH
ELLIPSOGRAPH — is the name of this simple device. It can be used to draw an ellipse with any ratio of the semiaxes. It is enough to set into the holes on the line of alignment pins to...
