Hole chi is marked with round hole site to highway maintenance drilling operation
The utility model relates to a hole chi is marked with round hole site to highway maintenance drilling operation, including the discoid chi body, the mark is gone up to the chi body has 360 angle scale marks, and the chi body is gone up the symmetry and is equipped with two arc circle grooves, is eq...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model relates to a hole chi is marked with round hole site to highway maintenance drilling operation, including the discoid chi body, the mark is gone up to the chi body has 360 angle scale marks, and the chi body is gone up the symmetry and is equipped with two arc circle grooves, is equipped with two scalar potential holes on the chi body, and two scalar potential holes lie in two arcs circle groove respectively and correspond between the end, arc circle inslot sliding connection has at least one scalar potential device, and the scalar potential device includes annular scalar potential circle, the fixed slider of locating scalar potential circle both sides, connects the pointer of placing an angle scale mark side slide in, and outwards extend respectively arc circle groove both sides has the spout, and outside extension of spout of placing angle scale mark one side in has the needle groove, and arc circle inslot is placed in to the scalar potential circle, and in the spout was placed in to the s |
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