CN103921593A - Multifunctional plotting board - Google Patents

Abstract

The invention relates to a surveying and mapping tool, especially a multifunctional surveying and mapping board, which includes a first surveying and mapping board and a second surveying and mapping board; A hub is installed below the position of the zero scale line of the scale line, and a wire rope is installed on the hub, and a winding shaft is fixed at the initial position of the scale line of the ruler; the first surveying board is also provided with a rectangular window at the lower position. , the upper and lower edge positions of the rectangular window are all provided with a chute in parallel, a straight board is installed between the two chute, and at least two straight holes for drawing lines are arranged on the straight board; the second surveying board is an angle ruler. The invention integrates the functions of drawing straight lines and parallel lines, measuring the length of large irregular objects outdoors, and measuring angles, has a simple structure, and is very convenient to use and carry. It is especially suitable for engineers who often work outdoors or in the field.

Description

A multifunctional surveying board

technical field

The invention relates to a surveying and mapping tool, in particular to a multifunctional surveying and mapping board.

Background technique

In the prior art, drawing a straight line and measuring length generally can use a ruler board. But if can't draw parallel line by straightedge board alone, also inconvenient, perhaps can't measure the longer object than ruler board itself. Sometimes, the actual length of some large irregular objects outdoors is difficult to measure even with a steel tape. Therefore, engineers who often work outdoors or in the field often need to carry a variety of surveying and mapping tools for use together, which is very troublesome. Obviously, ordinary surveying boards have a single function, and cannot simultaneously draw straight lines and parallel lines, measure the length of large irregular objects outside, and measure angles, and these function sets are exactly the daily needs of engineers.

Contents of the invention

The purpose of the present invention is to provide a multi-functional surveying and mapping board for the deficiencies of the prior art, which has multiple functions of drawing straight lines and parallel lines, measuring the length of large irregular objects outside, and measuring angles, and is simple and convenient to use.

The technical solution adopted to realize the object of the present invention is: a multifunctional surveying board, characterized in that: it comprises a first surveying board and a second surveying board, the lower edge of the first surveying board and the upper edge of the second surveying board The first surveying and drawing board is a linear ruler, the upper edge of which is provided with a ruler scale line, and a hub is installed below the zero scale line position of the ruler scale line, and a wire rope is installed on the hub, and the ruler scale line A winding shaft is fixed at the starting position of the first surveying board; a rectangular window is also provided at the lower part of the first surveying board, and a chute is arranged in parallel on the upper and lower edge positions of the rectangular window, and a chute is installed between the two chute There is a straight board, and at least two straight holes for drawing lines are arranged on the straight board; the second surveying and drawing board is an angle ruler.

The present invention has the following beneficial effects: since the straight board can slide freely between the two chutes, the nib can be inserted into the straight holes of different straight boards to draw straight or parallel lines; since the wire rope can be automatically retracted to the hub When measuring the length of large irregular objects outdoors, you can first pull out the wire rope in the hub and position it on the measurement object, then wind the effective wire rope on the two winding shafts, and record the number of turns and the length of the last section. Complete length measurement can be realized; the second surveying board can be folded on the first surveying board, and the second surveying board itself has the function of angle measurement; therefore, it can draw straight lines and parallel lines, measure the length of large irregular objects outside the The angle is multi-functional, the structure is simple, and it is very convenient to use and carry. It is especially suitable for engineers who often work outdoors or in the field.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a structural schematic diagram of the present invention.

In Fig. 1, 1. the first surveying board, 2. the second surveying board, 3. hub, 4. winding shaft, 5. rectangular window, 6. chute, 7. straight board, 8. straight hole for drawing line, 9 . Shaft.

Detailed ways

It can be seen from Fig. 1 that a multifunctional surveying board comprises a first surveying board 1 and a second surveying board 2, the lower edge of the first surveying board 1 is connected to the upper edge of the second surveying board 2 through a rotating shaft 9 The first surveying and drawing board 1 is a linear ruler, and its upper edge is provided with a ruler scale line, and a hub 3 is installed below the zero scale line position of the ruler scale line, and wire rope is installed on the hub 3, and the starting point of the ruler scale line A winding shaft 4 is fixed at the initial position; the first surveying board 1 is also provided with a rectangular window 5 at the lower position, and a chute 6 is parallelly arranged on the upper and lower edge positions of the rectangular window 5, and the two chute A straight board 7 is installed between the 6, and five straight holes 8 for drawing lines are arranged on the straight board 7; the second surveying board 2 is an angle ruler. Because the straight board 7 can slide arbitrarily between the two chutes 6, the nib can be inserted into the straight holes 8 of different straight boards 7 to draw straight lines or parallel lines; When measuring the length of large irregular objects outdoors, you can first pull out the wire rope inside the hub 3 and position it on the measurement object, then wind the effective wire rope on the two winding shafts 4, and record the number of turns and the length of the last section. Complete length measurement is realized; the second surveying board 2 can be folded on the first surveying board 1, and the second surveying board 2 itself has an angle measurement function.

Claims (1)

1. a Multifunction mapping plate, is characterized in that: it comprises the first plotting board and Second Surveying And Mapping plate, and the lower edge portion of the first plotting board is installed and is connected by rotating shaft with the upper edge of Second Surveying And Mapping plate; Described the first plotting board is straightedge rule, and its top edge is provided with ruler graduation mark, and the zero graduation line position below of ruler graduation mark is provided with a hub, and cotton rope is installed on hub, is all fixed with a roll in the original position of ruler graduation mark; Described the first plotting board, is wherein also provided with a rectangle window on lower position, on the upper and lower marginal position of rectangle window, all parallel chute that is provided with, is provided with a module extender board between two chutes, and module extender board is provided with at least two setting-out straight holes; Described Second Surveying And Mapping plate is bevel protractor.