Line on writing or desktop has “property” in the right time to get lost in the pile of papers, drawings, details. Fasten to the edge of the table, two cloves, and even better — screw two small screws with round head (not clung to); in the line also make two cut so that they easily included screws. Now the ruler will always literally at hand and never lost.
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You've probably heard: "he's Got good reflexes." Thicket just as they say about athletes. For example, the goalkeeper. He must react instantly to the ball rapidly flying into the net. Or...
