If the crocodile clip soldered to the curved steel rod with a handle from a file, you will get rid of the inconveniences associated with driving in small nails.
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Good to live on the banks of the wide flowing river! However, this convenient transportation artery often becomes an annoying obstacle to communication between villages. Motorists...
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...
