Plane right-angle instrument for marking line

Abstract

The invention provides a plane rectangular payingoff apparatus, comprising a laser emitter body and two laser receiver bodies; the laser emitter body comprises a stauroscope, a laser emitter, a sight line groove, a laser emitting shaft endpoint, a laser emitter switch, an optical plummet, a circular bubble, a tubular leveling instrument, a tripod, a tripod center connecting screw rod, a helix angle, a triangular base, a level brake fine-tuning bolt, a terminal disc and a cross division line; the laser receiver body comprises a stauroscope, a cross division line, an optical plummet, a circular bubble, a terminal disc, a tripod center connecting screw rod, a tripod, a helix angle, a triangular base, a tubular leveling instrument and a level brake fine-tuning bolt. The invention has the beneficial effects that: the invention saves the production cost of the apparatus, and improves the work efficiency; the precision and the theodolite are appropriate and have convenient operation and simple processing and eliminate the collimation error of the operators.

Description

technical field [0001] The invention relates to a construction setting-out instrument, in particular to a construction setting-out instrument applied to a rectangular main axis of a construction project. Background technique [0002] Theodolite or electronic optical theodolite is generally used for the construction setting out of the rectangular main axis in construction projects. It is mainly divided into three parts: the collimator, the base, and the tripod. Its principle is three points and one line. [0003] However, the manufacturing cost of the theodolite is relatively high, the operation is difficult, and the operation time is long. When the operator has a low technical level, it is easy to make mistakes, because the horizontal and vertical control bolts of the theodolite all contain two nuts for fixing and fine-tuning. The difference between the readings of the theodolite horizontal dial is 90 degrees, and it is possible to misuse it if the operator's technical level...

AI Technical Summary

Problems solved by technology

[0003] However, the manufacturing cost of the theodolite is relatively high, the operation is difficult, and the operation time is long. When the operator has a low technical level, it is easy to make mistakes, because the horizontal and vertical control bolts of the theodolite all contain two nuts for fixing and fine-tuning. The difference between the readings of the theodolite horizontal dial is 90 degrees, and it is possible to misoperate if the operator's technical level is not enough and the number of operations is not many

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