JPS63247601A - Staff for survey - Google Patents

Abstract

PURPOSE:To obtain a staff for survey which is accurately read to a small unit by forming plural equal-interval longitudinal lines and slanting lines connecting height graduations on the main surface of a rod-shaped body together with the height graduations. CONSTITUTION:The equal-interval longitudinal lines 20, 21...30 and polygonal continuous slanting lines 3 are formed on the main surface of the box surface rod-shaped body 1 to form the staff and when this is stood vertically to read height by a level, which longitudinal line the intersection P of the cross longitudinal line (a) and cross lateral line (b) of the level is closest to is read to make an accurate read up to the small unit. Then it is decided whether or not the staff is stood upright by checking the parallelism between the longitudinal lines 20, 21...30 and cross longitudinal line (a), the slanting lines 3 are slanted in the same direction to preclude a misread, or blocks (a) and (b) are colored differently to facilitate viewing operation.

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a surveying staff that enables precise reading of height by forming vertical lines and inclined lines on the main surface on which a height scale is formed. This is what I did.

(Prior art) A conventional surveying staff uses a rod-shaped body 5 as shown in FIG.
1, a reading portion 52 is formed for each unit scale on the main surface of the device, and this is read using a level cross horizontal line 53 or the like. However, as shown in the figure, when the horizontal cross line 53 is between 85 cm and 86 cm, for example, there is a problem in that it cannot be precisely read down to the millimeter level.

(Object of the Invention) An object of the present invention is to provide a surveying staff that can accurately read down to smaller units.

(Summary of the Invention) The present invention provides a surveying staff in which a height scale is formed on the main surface of a rod-shaped body, in which a plurality of vertical lines are formed at equal intervals on the main surface, and the distance between the height scales is This is a line formed by connecting the lines.

With this configuration, it is possible to accurately read even smaller units by reading which vertical line the intersection of a horizontal cross and an inclined line, such as a level, is closest to. Hereinafter, embodiments will be described with reference to the drawings.

(Example 1) Fig. 1 is a partial front view of a surveying staff according to the present invention, in which 1 is a box-shaped rod-shaped body which is the main body of the staff, and the main surface thereof has height scales 79 to 83 ( The unit cffi) is formed. 20, 21...30 are vertical lines formed on the main surface. There are a total of 11 vertical lines 20, 21, . . . 30, which divide the main surface into 10 equal intervals between the vertical lines 20 and 30. Reference numeral 3 indicates an inclined line, which is continuously formed in a broken line shape between each height scale.

This staff consists of the above-mentioned structure, and is held vertically to read the height using a level (not shown). a
, b are the vertical cross line and the horizontal cross line of the level, and the intersection point P of the horizontal cross line and the slope line 3 is which vertical line 20.21...30
by seeing which one is closest to the smaller unit (
D) can be read accurately. Note that if the inclined line 3 is formed continuously in a broken line shape as in this embodiment, there is an advantage that it is easy to read. In this example, the intersection P is 80 cm and 8
It lies on the vertical line 24 between 1 CIl+ and thus the reading is 80.6 elm. In addition, as shown by b1 in the figure, the horizontal cross line b1 does not necessarily intersect with the inclined line 3 on the vertical cross lines 20, 21...30, but in this case as well, the horizontal cross line b1 intersects with the inclined line 3. The nearest cross vertical line (in this example, 2
8), we can read 79.8 cm. In order to make it easier to read, the vertical line 25 in the center may be a thick line or a broken line as in this embodiment, or the vertical line 25 and the other vertical lines may have different colors. Also, this kind of staff tends to tilt laterally, but you can check whether the staff is standing straight by checking whether the vertical lines 20, 21...30 and the vertical cross line a are parallel. You can also know.

(Example 2) In FIG. 2, the inclined line 3 is formed by a serrated line connecting the height scales 79 to 83, and this line can also be read precisely to the nearest 1 m. In this example, the intersection point P is closest to the vertical line 28 and therefore 80.8 cna
It is. 4 is a horizontal line connecting the inclined lines 3 and 3. Incidentally, if each slope line 3 is inclined in the same direction (in this example, upward to the right) as in the present embodiment, the directionality of the reading direction as in the first embodiment can be eliminated and errors in reading can be prevented. It has the advantage of being easy to use.

(Example 3) In Figure 3, there are a total of seven vertical lines, and the vertical lines are 21.23.
, 27.29 are omitted. In this way, the vertical lines do not necessarily have to divide the main surface into 10 equal parts. Reducing the number of vertical lines in this way has the drawback of decreasing accuracy, but this is sufficient for surveys that do not require very high accuracy.

(Example 4) In Fig. 4, the blocks (A) and (B) have different colors (for example, red and white), and by color-coding the blocks (A) and (B) in this way, It is also possible to form an inclined line 3 (this has the advantage of being easier to visually recognize through the level, etc.).

(Embodiment 5) As shown in FIG. 5, the height scales 79 to 82 are formed by providing a blank space within the vertical line on the main surface, thereby making it possible to reduce the width T of the staff. There are advantages.

(Effects of the Invention) As explained above, the surveying staff according to the present invention is a surveying staff in which a height scale is formed on the main surface of a rod-shaped body. ...3
0 and also forms an inclined line 3 connecting the height scales, so the horizontal cross &%b of the level etc. and the inclined line 3 are formed.
By visually checking which vertical line the intersection point P is closest to, it is possible to accurately read down to smaller units.

[Brief explanation of the drawing]

The figures show embodiments of the present invention, and include Figures 1 and 2.
3, 4, and 5 are front views of the surveying staff, and FIG. 6 is a front view of the conventional one. 1... Rod-shaped body 3... Inclined line 20-30... Vertical line

Claims (1)

[Claims] A surveying staff comprising a height scale formed on the main surface of a rod-shaped body, characterized in that a plurality of vertical lines are formed at equal intervals on the main surface, and an inclined line connecting the height scales is formed. Surveying staff.