Graphometric square for building construction

Abstract

The invention discloses a graphometric square for building construction. The graphometric square comprises support plates, a sliding sleeve, bracing plates, a square body, a distance-measuring rollerand a window, wherein the square body, comprises a first square section, a second square section and a third square section; the first square section is arranged on the outer part of the second squaresection in a sleeving manner; the second square section is arranged on the outer part of the third square section in a sleeving manner; the bracing plates are hinged to the lower part of each side face of the first square section; the sliding sleeve is arranged on the outer part in a sleeving manner; the support plates are arranged between the bracing plates and the sliding sleeve; two ends of the support plates are respectively hinged with the bracing plates and the sliding sleeve; the distance-measuring roller is arranged above the right side of the third square section; the rectangular window is formed above the front side of the third square section; a distance counter is arranged at a position, which corresponds to the window, of the upper side of the interior of the third square section. The square body is telescopic, the measurable height is large, the bottom of the graphometric square is foldable, the graphometric square is convenient to store and can stand up, the manual labor is saved, the distance-measuring roller is combined with the distance counter, and the graphometric square is wide in measurement range and convenient to use.

Description

technical field [0001] The invention relates to the technical field of surveying and mapping devices, in particular to a surveying ruler for building construction. Background technique [0002] Surveying and mapping engineering refers to measuring various information of space and land and drawing topographic maps of various information. Usually, before developing a piece of virgin land or carrying out large-scale engineering construction, surveying and mapping engineers must measure and draw topographic maps and provide other information before they can make decisions, plan and design, so surveying and mapping work is very important. The objects of surveying and mapping engineering research and surveying and mapping are very extensive, mainly including various surface features, landforms and underground geological structures, hydrology, mineral deposits, etc., such as mountains, rivers, houses, roads, vegetation, etc. [0003] In the context of the rapid development of the ...

AI Technical Summary

Problems solved by technology

Surveying and mapping work in construction engineering is inseparable from surveying and mapping equipment. The current surveying rulers include tape measure and ruler. , can not accurately measure the surface, if the measurement distance is relatively long, it will be more troublesome to measure, thus affecting the measurement accuracy

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