JP3000496U - Upper diameter measuring mirror - Google Patents

Abstract

(57) [Summary] [Purpose] When using the standing timber volume table based on the chest height diameter and the diameter of 7.2 m, the telescope is used to more easily and accurately determine the diameter of 7.2 m. [Structure] With a sub-telescope that is always horizontal with a weight, look at the tape measure wrapped around the chest height of the measuring tree, set a point 6 m away, and set the main telescope at 45 degrees, and then the ground 7 It measures a diameter of 0.2 m. [Effect] The diameter of 7.2m can be measured without using a 7.2m pole or a 6m tape measure, and without being hindered by branches. Can be obtained, and the volume can be grasped more accurately and easily.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a sub-telescope that is always horizontal with a weight, determines a certain distance and height from the measurement tree, and measures a diameter of 7.2 m ahead with the main telescope set at 45 degrees. However, the volume can be measured accurately and simply by using it together with the volume table, regardless of the tree height value, which is difficult to measure.

[0002]

[Prior art]

 Traditionally, the volume of standing trees has been calculated from the volume table based on the chest height diameter and tree height. The chest height diameter is 1.2 m above the ground, so it can be accurately measured. Tree height is measured by various height gauges, but the measurement is quite difficult. The reason for this is that the better the stand, the more the crown is overcrowded, and the treetops are often not visible from below. If the tree height value is inaccurate, no matter how accurate the volume table or the height measuring instrument is used, the quadrature value must be inaccurate. Therefore, there is a volume table that can be obtained regardless of the tree height value, which is difficult to measure. (Journal of the Japanese Forestry Society, June 1934, and Forestry Technical Journal, March 1991) Among the upper diameters that can be measured, the diameter of 7.2 m above the ground and the diameter of the breast height "Sugi Tachiki" The volume table ". 7. The diameter of 2 m is to be read from the bottom by attaching a T-shaped upper diameter measuring scale to the tip of a 7.2 m rod. Since both diameters are actually measured values, the quadrature accuracy has improved dramatically.

[0003]

[Problems to be solved by the device]

 Of the two mentioned in the prior art, the latter two-diameter case requires manipulating a 7.2 m pole in the forest. Trees with no branches on the way are easy to operate, but generally there are many branches, so it is difficult to apply a T-shaped scale to the measurement position. Also, although it is an assembly type, the 7.2 m pole is inconvenient to carry.

The present invention has been made in view of the above problems of the prior art. The object of the present invention is that the quadrature value is accurate, the operation is simple, and the portable device is portable. It is convenient for

[0005]

[Means for Solving the Problems]

 To achieve the above object, the upper diameter measuring mirror of the present invention comprises a main telescope, a sub-telescope, a measuring mirror body, and a supporting frame. The main telescope consists of an objective lens, a Dach prism, and an eyepiece lens. A color film scale plate is located between the Dach prism and the eyepiece lens and is fixed to the measuring mirror body. The sub-telescope is made like the main telescope. The main body of the measuring mirror has a certain amount of weight, and the upper support shaft keeps it vertical at all times. The main telescope is mounted at 45 degrees and the sub-telescope is mounted horizontally. The support frame receives the supporting shaft of the measuring mirror main body by an elliptical bearing, and supports the measuring mirror main body freely.

In the case of using the present invention, first, the chest height diameter of the measuring tree is measured with a wide diameter split tape measure. Measure with a 0 cm tie and keep the tape measure fixed. Then, at a point approximately 6 m away from the measuring tree, with a support frame, the measuring mirror body stopped, and then looking through the sub-telescope, the height of the measuring tape was the same as the diameter split tape measure. Then, after standing at a point where the reading of the secondary scale plate looks the same as the diameter at breast height, change the viewpoint and look into the main telescope.

Then, the diameter of the measuring tree seen at the tip of the main telescope is 7.2 m above the ground. From the "Sugi standing timber volume table" at hand, it is possible to determine the rank of the measured tree and the timber volume of that single tree based on the chest height diameter measured earlier and this diameter value of 7.2 m. .

[0008]

【Example】

 Examples will be described with reference to the drawings. In FIG. 1, the main telescope 1 includes an objective lens 2, a Dach prism 3, a main scale plate 4, and an eyepiece lens 5. The scale of the main scale plate 4 is a scale corresponding to the diameter value 8.49 m ahead looking through the main telescope. That is, every 2 cm, there are white, black, yellow, red, and green color bands, and the odd value is colored smaller than that of the even value, and the lower part of the color band is 0, 10, 20, 30, Like 40 and 50, there are sections every 10 cm 2. The starting point 6 of the scale is minus 0, as shown by a 1 cm contraction. The starting point 6 is 5 cm. In other words, the width of the odd small white band showing the first 1 cm is 1.5 cm. Naturally, the width of the even large white band indicating the next 2 cm is 1 cm. And it is greatly colored to make it easy to see by putting it on the left side of the diameter of the measurement tree. This graduation is taken on a reversal color film and is used as the main graduation plate 4. The scale plate 4 is fixed to the focus of the eyepiece lens 5 horizontally and at the center. The focus of the main telescope 1 is always set to 8.49 m, but if the objective lens 2 is adjusted, general scenery can be clearly seen.

The sub-telescope 7 has exactly the same structure as the main telescope 1. However, the secondary scale plate 8 is provided with a scale plate at a scale that matches the diameter value 6 m ahead looking through the secondary telescope 7.

The measuring mirror main body 9 has a certain weight, and is supported by the upper support shaft 10 and the bearing 12 of the support frame 11. The measuring mirror main body 9 swings and eventually becomes vertical, so that it stands still. It is The main telescope 1 is fixed to the measuring mirror body 9 at 45 degrees so that the sub-telescope 7 is horizontal.

The support frame 11 supports the measuring mirror body 9 with a support shaft 10 and a bearing 12. Since the bearing 12 has a vertical elliptical shape, even if the present invention is laid down, the support shaft 10 is not subjected to an excessive force. There is a tripod mounting hole 13 at the bottom.

When using the present invention, wrap a straight tape measure around the chest height (1.2 m) of the tree to be measured, read it with a 1.0 cm sizing, and fix it with a push pin. Keep it. Next, look at the horizontally stationary sub-telescope 7 standing at a position approximately 6 m away from the tree, approximately horizontally. The height of the tape measure wrapped around the measuring tree and the height of the sub scale plate 8 are the same, and the point where the chest height diameter value of the measuring tree and the scale of the sub scale plate 8 are the same from the measuring tree. Is 6 m and its height is 1.2 m above the ground.

At that time, if the viewpoint is moved to the main telescope 1 in the same posture, the diameter of the measurement tree seen in front is 7.2 m on the ground. The diameter of the left end of the measuring tree is applied to the starting point 6, the diameter of the right end and the intersection with the main scale plate 4 are observed, and the diameter value of the tree is 7.2 m. Now, if the lower 10 cm section value is 20 and intersects with the yellow small color band, the value is a 1 cm contraction of 25 cm.

There is a "Sugi standing timber volume table" (Table 1) which is used according to the breast height diameter and the diameter value of 7.2 m. This volume chart is printed on the left side of the table with the diameter of the skin chest height from 6 cm to 70 cm. From the left, "stretching", "stretching", "stretching", "stretching" and "stretching". “Elongation”, and the “range of diameter of 7.2 m” for each bark is shown alongside the value for no-skin volume. This table is postcard-sized and laminated.

[0015]

[Table 1]

[0016] Now, if the chest height diameter of the measuring tree to be measured is measured and the upper diameter of 7.2 m 2 can be known at the point 6 m apart, Table 1 reveals the following.

The rank of the measurement tree is known. If the diameter at breast height is 32 cm and the diameter at 7.2 m is 25 cm, the rank is "growing" from Table 1, and the unsheathed area of a single tree is 0.736 cm ³ .

The chest height diameter is measured in the first stage of the measurement. At that time, see Table 1, and confirm the "extending" "range of diameter of 7.2 m" with respect to the chest height diameter. The diameter range is 3-4 cm in all cases, so in most stands 7. No effort is required to measure the 2 m diameter value in mm, and the rank of the forest can be determined as soon as you look through the main telescope. However, when the diameter value is close to other ranks, it needs to be measured carefully.

Since the present invention is configured as described above, it has the following effects.

[0020]

[Effect of device]

 As soon as we looked into the main telescope, we could know the diameter of 7.2 m by the 1 cm constriction value only by the present invention and the tape measure of diameter. You can know the rank of minutes.

Since the diameter of 7.2 m is not measured in the familiar unit but is read at the intersection with the color band, the measurement is extremely easy.

Even if there is a branch near 7.2 m to be measured, there is no hindrance to the measurement.

One person is sufficient for this work.

Even in the dark forest or at night, it can be measured by using a 6 volt, halogen bulb, and variable focus flashlight.

The present invention has a size that fits in a pocket and is extremely convenient to carry.

Particularly, in a tropical forest or a forest such as a broad-leaved tree whose height is difficult to measure, the quadrature efficiency can be improved remarkably by the combined use of a volume table suitable for the forest. Let's do it.

[Brief description of drawings]

FIG. 1 is a perspective view of an upper diameter measuring mirror.

FIG. 2 is a plan view of a main scale plate.

[Explanation of symbols]

 1. Main telescope. 2. Objective lens. 3. Dach prism. 4 main scale plate. 5. Eyepiece. 6. Starting point. 7. Sub-telescope. 8. Secondary scale plate. 9. Measuring mirror body. 10. Support shaft. 11. Support frame. 12. bearing. 13. Hole for mounting a tripod.

Claims (1)

[Scope of utility model registration request] 1. A device for automatically measuring a horizontal telescope to determine a measuring point and measuring a diameter of 7.2 m ahead of the other telescope set at 45 degrees.