JPH038978Y2 - - Google Patents
Info
- Publication number
- JPH038978Y2 JPH038978Y2 JP18424084U JP18424084U JPH038978Y2 JP H038978 Y2 JPH038978 Y2 JP H038978Y2 JP 18424084 U JP18424084 U JP 18424084U JP 18424084 U JP18424084 U JP 18424084U JP H038978 Y2 JPH038978 Y2 JP H038978Y2
- Authority
- JP
- Japan
- Prior art keywords
- compass
- magnetic needle
- dial
- ring member
- reflecting mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006059 cover glass Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Drawing Aids And Blackboards (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
【考案の詳細な説明】
〔目的〕
産業上の利用分野……この考案は、磁針方位角を
測定する反射鏡付円形コンパスの改良に関するも
のである。[Detailed description of the invention] [Purpose] Industrial field of application: This invention relates to the improvement of a circular compass with a reflector for measuring the azimuth angle of a magnetic needle.
従来の技術……コンパス測量においては、一般に
磁針と目盛盤とを備えたコンパスをトランシツト
等の上部に載設し、トランシツトの回転軸と、磁
針の水平回転ピボツトを一致させた構造により方
位角を求めながら山林、農地、鉱山等の測量がお
こなわれる。この際、磁針の示す位置を方位角目
盛盤上に直接観測してその方位角を読み取る方式
が採られるから、目盛盤は観測者の目より高い位
置を占めることになつて、上面からコンパスを覗
かなければならないという観測作業上の困難性を
避けることはできない。この問題を解決するた
め、コンパス本体に反射用ミラー又はプリズムを
取付け、これらを通して目盛盤を覗くようにした
方式が採られている。Conventional technology: In compass surveying, a compass equipped with a magnetic needle and a dial is generally mounted on top of a transit, etc., and the azimuth angle is determined by a structure in which the axis of rotation of the transit is aligned with the horizontal rotation pivot of the magnetic needle. Surveys of mountains, forests, farmland, mines, etc. are carried out while searching. At this time, a method is adopted in which the position indicated by the magnetic needle is directly observed on the azimuth dial and the azimuth is read, so the dial occupies a position higher than the observer's eyes, and the compass is read from the top. It is impossible to avoid the difficulty of observation work, which requires looking into the sky. In order to solve this problem, a method has been adopted in which a reflective mirror or prism is attached to the compass body, and the dial is viewed through the reflective mirror or prism.
しかし、この様な従来のコンパスによる観測機
構を用いては、磁針方位に縦つて振れる磁針を全
方位に亘つて観測することは困難である。即ち、
実用上から余り巾の広い反射ミラー等を用いるこ
とは不可能であつて巾のやゝ狭いものを用いざる
を得ないため、その視野内に目盛盤全体を収める
ことが出来なくなつて方位測定範囲が制限される
ことになる。この観測範囲を広くするため例へば
目盛盤の半分以上を収め得るような大型の反射ミ
ラーやプリズムを取付けると、価格や構造上から
不利となり外観の点からも商品価値は低下し、保
管格納上も不便となる。 However, using such a conventional observation mechanism using a compass, it is difficult to observe a magnetic needle that swings vertically in the direction of the magnetic needle in all directions. That is,
For practical reasons, it is impossible to use a reflecting mirror with a very wide width, and one must use a very narrow one, which makes it impossible to fit the entire dial within the field of view, making it difficult to measure direction. The range will be limited. In order to widen this observation range, for example, if a large reflecting mirror or prism that can accommodate more than half of the dial is installed, it will be disadvantageous in terms of price and structure, the product value will decrease in terms of appearance, and it will also be difficult to store. It will be inconvenient.
考案が解決しようとする問題点……この考案は、
上述のような従来の反射鏡付コンパスの欠点を解
消し、磁針方向角の観測範囲が広く観測作業を行
い易い反射鏡付コンパスを提供することを目的と
するものである。The problem that the idea is trying to solve...This idea is
It is an object of the present invention to provide a compass with a reflecting mirror that can overcome the drawbacks of the conventional compass with a reflecting mirror as described above, has a wide observation range of the magnetic needle direction angle, and is easy to perform observation work.
問題点を解決するための手段……本考案は上述の
目的を達成するため磁針と目盛盤を内設した円形
コンパス本体の外周に回転可能に周設したリング
部材に反射プリズム又は起伏自在にした反射ミラ
ーを取付けたことを特徴とする回転反射鏡付円形
コンパスなる構成を有するものである。
Means for solving the problem...In order to achieve the above-mentioned purpose, the present invention uses a reflective prism or a ring member rotatably installed around the outer periphery of a circular compass body in which a magnetic needle and a dial are installed. This compass has a circular compass with a rotating reflecting mirror, which is characterized by a reflecting mirror.
実施例……図面に示す実施例について本考案を説
明すれば次の通りである。Embodiments: The present invention will be described below with reference to embodiments shown in the drawings.
第１図に示す如く、コンパス本体８の中央に針
受５を固設し、その先きに回転自由な磁針４を載
設すると共に磁針４に対設して目盛盤６及びその
保護用カバーガラス１を該本体８に固定し、カバ
ーガラス１を押設するガラス押さえ２を該本体８
の上縁面に当接して従来と同様構造の円形コンパ
スを図示のとおりに構成する。なお、１１は磁針
固定用のリフター、１２はそれを操作するノブで
ある。 As shown in FIG. 1, a needle holder 5 is fixed in the center of the compass main body 8, and a rotatable magnetic needle 4 is placed at the tip of the needle holder 5, and a dial 6 and its protective cover are placed opposite the magnetic needle 4. The glass 1 is fixed to the main body 8, and the glass holder 2 for pressing the cover glass 1 is attached to the main body 8.
A circular compass having the same structure as the conventional one is constructed as shown in the figure. Note that 11 is a lifter for fixing the magnetic needle, and 12 is a knob for operating it.
次に、本実施例ではコンパス本体８の外周部に
図示の如く溝８′を囲繞凹設し、そこにリング部
材７を回動自在に嵌合させ且所望位置に停止し得
る様に構成する。従つてコンパス本体８の回りに
リング部材７を回転自由にすると共に回転停止用
のノブ付小ねじ又はバネ等（図示してない）を利
用する様にしても良い。そして、リング部材７に
ブラケツト９及びピン１０を介して反射ミラー３
を取付け、ピン１０の回りに回転自在すなわち目
盛盤６に対して起伏自在にして、観測は勿論携帯
や保管に便ならしめている。 Next, in this embodiment, a groove 8' is provided in the outer peripheral part of the compass main body 8 as shown in the figure, and the ring member 7 is rotatably fitted therein and configured so that it can be stopped at a desired position. . Therefore, the ring member 7 may be allowed to freely rotate around the compass body 8, and a small screw with a knob or a spring (not shown) may be used to stop the rotation. Then, a reflective mirror 3 is attached to the ring member 7 via a bracket 9 and a pin 10.
It is mounted so that it can rotate freely around the pin 10, that is, can freely rise and fall with respect to the scale plate 6, making it convenient not only for observation but also for carrying and storage.
作 用……以上の如く構成し、反射ミラー３を適
当に（一般には45゜程度）に傾けてコンパス側方
から覗き、磁針の位置が視野のほゞ中央にくる様
にリング部材７を回転すると、第２図の如く磁針
４と目盛盤６が反射ミラー３上にそれぞれの虚像
４′，６′として観測される。Function: With the configuration as described above, the reflecting mirror 3 is tilted appropriately (generally about 45 degrees), the compass is viewed from the side, and the ring member 7 is rotated so that the position of the magnetic needle is approximately in the center of the field of view. Then, as shown in FIG. 2, the magnetic needle 4 and the dial 6 are observed on the reflecting mirror 3 as virtual images 4' and 6', respectively.
反射プリズムを用いた場合も、上記起伏操作を
除いて同様に機能する。 When a reflective prism is used, it functions in the same way except for the above-mentioned undulating operation.
以上の説明から明かな様に、本考案によるとリ
ング部材を回転するという極めて簡単な操作を加
えるだけで全方位に亘る目盛を容易に読み取るこ
とが可能となり、視差誤差のない観測ができる様
になるから、観測作業の容易な精度のよい能率的
コンパス測量が可能となる。
As is clear from the above explanation, according to the present invention, it is possible to easily read the scale in all directions by adding an extremely simple operation of rotating the ring member, and observation without parallax error is possible. Therefore, it is possible to perform compass surveying with ease and accuracy and efficiency.
第１図は、この考案の一実施例の縦断面図、第
２図はこれを用いて観測したときの状態を示す一
部の拡大平面図である。
３……反射ミラー、４……磁針、６……目盛
盤、７……リング部材、８……コンパス本体、９
……ブラケツト。
FIG. 1 is a vertical cross-sectional view of an embodiment of this invention, and FIG. 2 is a partially enlarged plan view showing the state observed using this device. 3... Reflection mirror, 4... Magnetic needle, 6... Scale plate, 7... Ring member, 8... Compass body, 9
...Bracket.
Claims (1)
周に回転可能に周設したリング部材に反射プリズ
ム又は起伏自在にした反射ミラーを取付けたこと
を特徴とする回転反射鏡付円形コンパス。 A circular compass with a rotating reflective mirror, characterized in that a reflective prism or a reflective mirror that can be raised and lowered is attached to a ring member that is rotatably provided around the outer periphery of a circular compass body that has a magnetic needle and a dial inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18424084U JPH038978Y2 (en) | 1984-12-06 | 1984-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18424084U JPH038978Y2 (en) | 1984-12-06 | 1984-12-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6199008U JPS6199008U (en) | 1986-06-25 |
| JPH038978Y2 true JPH038978Y2 (en) | 1991-03-06 |
Family
ID=30741725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18424084U Expired JPH038978Y2 (en) | 1984-12-06 | 1984-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH038978Y2 (en) |
-
1984
- 1984-12-06 JP JP18424084U patent/JPH038978Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6199008U (en) | 1986-06-25 |
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