SU1582008A1 - Plotting board for eye survey of the terrain - Google Patents

Abstract

The invention relates to topography, can be used for visual surveying of the terrain and allows for increased reliability and convenience in operation. A sheet of pencil tracing paper is fixed on the surface of the transparent disk 3 of the tablet, on which the starting point is marked and the magnetic meridian lines are aligned, aligned with line 4. The direction of the azimuthal course that needs to be built from the starting point will coincide with scale grid 2, deposited on the upper surface of the flat base 1. 2 Il.

Description

FIG. 2

The invention approaches the topography and can be used for visual surveying of the terrain, for example, when comparing sports maps for sports orienteering, sports direction finding and tourism or for training purposes.

The purpose of the invention is to increase reliability and ease of operation.

Figure 1 and 2 shows the tablet, side view and top view, respectively.

The tablet contains a flat base 1 with a deposited scale grid 2, a disk 3 of transparent material with magnetic meridian lines 4 on its surface, axis 5, a magnetic compass 6, a sighting device consisting of an inclined mirror 7 with a mark on its surface 8 and the reticle 9. In addition to that | Go, figure 1 and 2 shows the sighted object 10.

1 A disk 3, made for example of plexiglass, is rotatably fixed with a non-magnetic axis 5 in the center of a flat base 1 made of, for example, solid foam. Magnetic compass 6 is mounted on the surface of the disk 3. Inclined mirror 7 and a viewfinder 9 are mounted on the surface of the flat base 1 on opposite edges of the tablet, with the axis of sight passing through the reticle 9 and the mark 8 parallel to one of the directions of the lines of the scale grid 2, the inclined mirror 7 is set so that The plane of the mirror 7 and the planar base 1 was perpendicular to the axis of sight, the angle between the reflecting surface of the mirror 7 and the plane of the base 1 was approximately 135 °.

The survey of the terrain is carried out as follows.

On the surface of the transparent disk 3 with adhesive tape secured

a pencil tracing sheet (or a translucent matte plastic film) designed to plan the terrain, on which the starting point is marked and the magnetic meridian lines are aligned, aligned with the lines 4. mark 8, rotate the disk 3 to align the 4 lines or lines of the magnetic meridian on the tracing paper with the direction of the magnetic meridian,

5 as per the magnetic compass needle 6.

The direction of the azimuthal course, which must be constructed from

0 of the anchor point, coincides with the line of sight and with the corresponding direction of the lines of the scale grid 2, therefore, the construction of the azimuthal motion on the tracing paper is carried out by hand,

5 the use of the scale grid line (similar to the construction performed on graph paper). After measuring the distance to the object being sighted 10, it is delayed to the scale

0 on the constructed azimuthal course also using the scale grid. For convenience, the grid should have a pitch of 1-2 mm.

35

formula of invention

Tablet for the visual survey of the terrain, containing a flat base, on the upper surface of which a disk with a compass mounted on it is mounted for rotation and a device for sighting placed on a flat base, characterized in that

increase reliability and convenience in operation, the disk is made transparent with magnetic meridian lines affixed to it, and a scale is applied on the upper surface of the flat base

on the grid.

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Claims (1)

Claim A tablet for eye surveying of the area, containing a flat base, on the upper surface of which a disk with a compass mounted on it is mounted with rotation and a sighting device placed on a flat base, characterized in that, in order to increase reliability and ease of use, the disk is made transparent with the lines of the magnetic meridian deposited on it, and a large-scale grid is deposited on the upper surface of the flat base. Compiled by G, Homeland Editor N. Kishtulinets Tehred M. Khodanich Corrector A, Osaulenko Order 2080 Circulation 387 Subscription VNIIIPI State 113035, Committee for Inventions and Discoveries under the USSR SCST Moscow, Zh-35, Raushskaya nab., D. 4/5 Production and Publishing Plant Patent, Uzhhorod, st. Gagarina, 101