Novel gradient ruler
The utility model relates to a gradient measuring tool, in particular to a novel gradient ruler which is composed of a vertical rod and a cross rod, wherein openings are arranged on two sides, the cross rod is threaded through the middle portion and is fixed through fixing rollers which are evenly d...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model relates to a gradient measuring tool, in particular to a novel gradient ruler which is composed of a vertical rod and a cross rod, wherein openings are arranged on two sides, the cross rod is threaded through the middle portion and is fixed through fixing rollers which are evenly distributed on the upper portion and the lower portion, scales are marked on the cross rod, number reading holes with graticules are arranged on a crossed position of the vertical rod and the cross rod, a round air level is arranged on the top surface of the vertical rod, and a thread passing hole is arranged on the top end of the cross rod. Since the cross rod can be moved flatly in the vertical rod, thereby the usable range is greatly improved, the defect that the gradients of an existing gradient ruler are single is overcome, the usable range of the novel gradient ruler is greatly improved, the novel gradient ruler not only can be used to measure gradients in complicated terra sections, but also can set out gradi |
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