Water level box staff
The utility model discloses a box staff with a vertical precision correction device. The box staff is formed by arranging a transverse horizontal level bubble and a longitudinal horizontal level bubble, or a front circular level bubble and a back circular level bubble on the end part of a common box...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Online-Zugang: | Volltext bestellen |
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| Zusammenfassung: | The utility model discloses a box staff with a vertical precision correction device. The box staff is formed by arranging a transverse horizontal level bubble and a longitudinal horizontal level bubble, or a front circular level bubble and a back circular level bubble on the end part of a common box staff. A user swings the box staff through observing the level bubbles, so that the box staff can be erected up to be vertical easily, thereby ensuring the measuring precision. |
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