CN2325759Y - Ruler for measuring distance - Google Patents
Ruler for measuring distance Download PDFInfo
- Publication number
- CN2325759Y CN2325759Y CN 98213576 CN98213576U CN2325759Y CN 2325759 Y CN2325759 Y CN 2325759Y CN 98213576 CN98213576 CN 98213576 CN 98213576 U CN98213576 U CN 98213576U CN 2325759 Y CN2325759 Y CN 2325759Y
- Authority
- CN
- China
- Prior art keywords
- ruler
- distance
- measuring distance
- plane
- interval
- 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 - Fee Related
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to a ruler for measuring distance. A plane of a straight ruler (1) with scales is vertically crossed with a plane of a rod component (2). A center line of the straight ruler is vertically crossed with the space of a center line of the rod component. The ruler for measuring distance has the advantages of convenient operation, high precision, simple structure, low manufacture cost and high practicality.
Description
The utility model belongs to survey instrument, particularly than the field of tool of telemeasurement.
In order to make the distance that the measures realistic distance of trying one's best, the survey instrument of use becomes increasingly complex; If do not have these complex structures, expensive instrument, then range finding can only be adopted range estimation, and accuracy greatly reduces.
The purpose of this utility model provide a kind of easy to use, accuracy is higher and structure is extremely simple, cost of manufacture is extremely low survey instrument.
The utility model is realized its purpose as follows: graduated ruler plane, 1 place and plane, rod member 2 place intersect vertically, and the center line of ruler and the center line of rod member intersect in spatial vertical.
Utilize telemeter rod of the present utility model to measure larger distance, though the result who records is accurate not as the use fine measuring instrument, it is much accurate to estimate.It uses and converts conveniently, and acquisition cost is also very low, very is suitable for general the measurement.
Embodiment further specifies the utility model below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of the utility model telemeter rod.
After being to use this telemeter rod to measure, Fig. 2 is scaled the computing formula of concrete distance.
Graduated transparent ruler plane, 1 place and plane, rod member 2 place intersect vertically, and the center line of ruler and rod member intersects in spatial vertical.Can fixedly connected between ruler and rod member, also can adopt detachable type fixedly connected; When using detachable type fixedly connected, but also calibrate of rod member makes the rod member that disassembles also can make ruler and uses.During measurement, ruler must make measured target and chi head 4, chi tail 3 in a straight line, and the chi head aims at the mark, and the chi tail is fixed on the holder that is positioned at measuring point, and the side now that the chi tail can be close to the people supports point of fixity as one, and is fixing better certainly with tripod; The people is at chi tail object observing, and chi tail location is a measuring point.
Owing to must use the numerical value of mil when measure calculating, so must at first determine the conversion method of size and mil during this chi of use.The distance that target width (or height) is called " at interval ", target and measuring point is called " distance ", distance is that mil of determining this interval at 10: 1 o'clock is 100 with the ratio at interval, when the measuring point of this distance is measured, the length measured from the ruler observation interval is 5cm, that is to say: the 1cm on the ruler is 100/5 mil at this moment.Fig. 2 be to use telemeter rod of the present utility model measure at interval or apart from the time used computing formula.The use pithy formula of formula is: go up at interval, next thousand, apart from mil on both sides; Wanting which is tried to achieve, multiplies each other in both sides, divided by opposite side.
Several measurements and computing method below are described:
Known spacings range finding from:
When known target is spaced apart 10m, recording this length at interval from ruler is 8cm, calculates measuring point range-to-go method to be: distance=(10m * 1000) ÷ (8 * 100/5)=62.5m.
2. known distance is surveyed at interval
When measuring point is 105m to target range, record from ruler and be spaced apart 6cm, the partitioning method that calculates target is:
At interval=105m * (6 * 100/5) ÷ 1000=12.6m
From with two the measuring points range finding of target on same straight line from:
Distance between this measurement requirement two measuring points is greater than measuring point to 1/10th of target range.The method of measuring is to survey target interval (being unit representation equally with cm) respectively on former and later two measuring points; Two numerical value to reading from ruler 1 reduce several differences with big number, and number is divided by the distance that multiply by again after the difference between two measuring points greatly, and its total is back one measuring point range-to-go.
As: to record target interval be 9cm to a measuring point forwardly, and the target interval that rear one measuring point records is 8cm, and distance is 20m between two measuring points.Then rear one measuring point range-to-go is:
Distance=9 ÷ (9-8) * 20=180 (m).
Claims (1)
- A kind of telemeter rod is characterized in that graduated ruler (1) plane, place and rod member (2) plane, place intersect vertically, and the center line of ruler and the center line of rod member intersect in spatial vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98213576 CN2325759Y (en) | 1998-03-19 | 1998-03-19 | Ruler for measuring distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98213576 CN2325759Y (en) | 1998-03-19 | 1998-03-19 | Ruler for measuring distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2325759Y true CN2325759Y (en) | 1999-06-23 |
Family
ID=33967481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98213576 Expired - Fee Related CN2325759Y (en) | 1998-03-19 | 1998-03-19 | Ruler for measuring distance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2325759Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706321A (en) * | 2012-06-21 | 2012-10-03 | 广西壮族自治区林业科学研究院 | Method for measuring distance |
| CN108534746A (en) * | 2018-05-16 | 2018-09-14 | 杨米朵 | A kind of simple ranging rod |
-
1998
- 1998-03-19 CN CN 98213576 patent/CN2325759Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706321A (en) * | 2012-06-21 | 2012-10-03 | 广西壮族自治区林业科学研究院 | Method for measuring distance |
| CN108534746A (en) * | 2018-05-16 | 2018-09-14 | 杨米朵 | A kind of simple ranging rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |