Multipurpose surveying and mapping pen

Abstract

The invention relates to a multifunctional surveying and mapping pen which comprises a main pen, an auxiliary pen, a straight ruler and a scale sleeve. The main pen comprises a main pen point, a main pen upper shell and a main pen lower shell. The auxiliary pen comprises an auxiliary pen point, an auxiliary pen upper shell and an auxiliary pen lower shell. The straight ruler is slotted, and an opening is formed in one end of the straight ruler. The main pen point is used as a supporting point for surveying and mapping, and the auxiliary pen point is used for drawing. Slots are formed in the circumferential faces of the main pen and the auxiliary pen along the axial line of the main pen and the axial line of the auxiliary pen respectively, wherein the circumferential faces are the same in height, therefore, the two pens can be embedded into a whole through the straight ruler and can be separated, the pens slide in the straight ruler, and the function of surveying and mapping a straight line is achieved. The main pen is used as a rotation center, the auxiliary pen can be fixed to any position of the straight ruler through the rotation of a threaded knob, the auxiliary pen is driven by the straight ruler to rotate, and then an angle can be determined through the scale sleeve clamped on the main pen, so that the function of surveying and mapping any circles, arcs, sectors, radiuses and angles is achieved. The multifunctional surveying and mapping pen has the advantages of being simple in structure, safe to use, low in cost and easy to operate, and both drawing quality and drawing efficiency are improved.

Description

technical field [0001] The invention relates to a multipurpose surveying and mapping pen capable of drawing and measuring elements such as straight lines, circles, circular arcs, fan shapes and specific angles. Background technique [0002] In the daily drawing process, draftsmen often need to use a series of surveying and drawing tools, such as rulers, compasses, T-squares, set squares, protractors, etc. to draw and measure elements such as straight lines, circles, arcs, sectors, and angles of specific angles. One or a combination of the above-mentioned surveying and mapping tools is often required in daily life and work. For example, when drawing a sector with a specific central angle, first use a straightedge to draw a straight line, then use a protractor to measure a specific angle, with the help of an auxiliary dotted line, use a straightedge to measure and draw another radius, and finally use a compass to draw a circle arc. When drawing more complex graphics, two or ...

AI Technical Summary

Problems solved by technology

When drawing more complex graphics, two or even three surveying and mapping tools are required to be used toge

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