CN2536415Y - Measuring rulers for navigation - Google Patents
Measuring rulers for navigation Download PDFInfo
- Publication number
- CN2536415Y CN2536415Y CN 02229368 CN02229368U CN2536415Y CN 2536415 Y CN2536415 Y CN 2536415Y CN 02229368 CN02229368 CN 02229368 CN 02229368 U CN02229368 U CN 02229368U CN 2536415 Y CN2536415 Y CN 2536415Y
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- China
- Prior art keywords
- shaped
- semi
- scale lines
- navigation
- cross line
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Abstract
A measuring rule for navigating comprises a rectangular plate which is made of transparent material, wherein the central portion of the rectangular plate is provided with a cross line, and loop-shaped scale lines with 360 DEG are marked with the central point of the cross line as the circular center, N-shaped and S-shaped marks are respectively marked at the upper and the lower ends of the cross line, and W-shaped and E-shaped marks are marked at the left and the right ends, the 360 DEG scale lines are arrayed clockwise from the N-shaped marks, a semi-circular ring shaped perforated groove is arranged at an outer ring or an inner ring of the loop-shaped scale lines at the half lower portion of the cross line, and a semi-circular ring shaped perforated groove is arranged at an outer ring or an inner ring of the loop-shaped scale lines at the half lower portion of the cross line, and the space between the surrounding of the loop-shaped scale lines and the outer surrounding of the rectangular plate is provided with a coordinate locating line. The utility model has the advantages of reasonable structure, simple and convenient employment, quick drawing, time-saving, extremely little inaccuracy, clear scales, definite direction performance when drawing, and does not need to be parallel moved, and does not read wrongly, and inaccuracy does not exist, and the utility is only composed of a ruler, so carrying and collecting are evenly very convenient.
Description
(1) technical field
The utility model relates to a kind of survey tool, especially a kind of navigation dip stick, and it is suitable for using in the teaching process of plotting when navigation and navigation universities and colleges.
(2) technical background
Ride the sea, boats and ships all will carry out plotting, to guarantee shipping navigation safety, the course line of will on sea chart, drawing, just need measure other number of degrees in course or relevant course with drawing instrument on sea chart with navigation, the drawing instrument that generally uses in the navigation field at present is the navigation set square.This navigation set square comprises two identical set squares, every all indicating 0 °～180 ° and 180 °～360 ° scale fall carving on the set square, and every degree all has a graduation mark relative with it, and the intersection point of graduation mark is a central point, the long limit of set square is the base, and other both sides are isometric.Using the principle of navigation set square is according to positioned parallel shifting principle and two one line principles.Use the method for navigation set square to have following two kinds:
1, first method
1. use set square
1The base by the central point of compass rose (annotate: compass rose is that sea chart is marked with 0 °～360 ° dial) and the graduation mark of the required number of degrees, at this moment the number of degrees of set square indication are exactly the desired number of degrees.
2. use set square
2With set square
1The parallel accommodation point that moves in base, promptly the base is by the accommodation point, by accommodation strokes and dots straight line, this straight line is exactly straight line or its reverse line of required angle correspondence then.
Example: the 35 ° of N in accommodation, 121 ° of E, calm nothing stream, planned course is drawn in 45 ° in course.
Step: 1. make set square
1The base aim at center of compass rose and 45 ° graduation mark.
2. utilize set square
2The translation set square
1, make set square
1The base by the accommodation point.
3. by accommodation strokes and dots straight line, this straight line is exactly planned course or planned course so
Reverse line.
2, second method
1. make set square
1The center and sea chart on arbitrary radial line overlap.
2. make set square
1The graduation mark of going up the required number of degrees also overlaps with this radial line, at this moment, and set square
1The number of degrees of base indication be the required number of degrees.
3. utilize set square
2With set square
1The base move to the accommodation point, by accommodation strokes and dots straight line, this straight line is required straight line or its reverse line just.
Annotate: when the measurement number of degrees were 0 °～180 °, the set square base was following, and graduation mark is last.
When the measurement number of degrees were 180 °～360 °, the set square base was last, and graduation mark is following.
Example: the 35 ° of N in accommodation, 121 ° of E, calm nothing stream, planned course is drawn in 45 ° in course.
Step: 1. make set square
1The center and sea chart on arbitrary radial line overlap;
45 ° graduation mark is also overlapped with this radial line;
3. utilize set square
2Parallel mobile set square
1, make set square
1The base overlap with accommodation point;
4. by accommodation strokes and dots straight line, this straight line is exactly desired planned course or its reverse line.
The shortcoming of using the navigation set square to draw sea chart is: a, in fact plotting is will draw many direction lines just can finish, and uses navigation set square program complexity, loses time; B, compass rose and far away through line-spacing accommodation point, direction line of every picture all needs translation, and the error that causes in the process of translation is bigger; C, the line that draws have the amphicheirality, visually misjudgment easily; Be carved with the dual number of degrees on d, the set square, easily the number of degrees misread; E, using method complexity find it difficult to learn; F, need have two set squares simultaneously, collection is inconvenient.
(3) summary of the invention
The purpose of this utility model is just at above-mentioned existing situation and custom-designed a kind of navigation dip stick, this dip stick structure rationally, easy to use, mapping is rapidly, and is easy to carry.
The purpose of this utility model realizes by following scheme: this navigation comprises the rectangular slab of being made by transparent material with dip stick, be provided with at the middle part of rectangular slab cross hairs and with the cross hairs central point be the center of circle indicate 360 the degree circular graduation marks, indicate N and S mark respectively at the two ends up and down of cross hairs, two ends, the left and right sides indicate W and E mark, 360 degree graduation marks are by N place arranged clockwise, outer ring or inner ring at the circular graduation mark of the first half of cross hairs offer the blank groove of semi-annular shape, inner ring or outer ring at the circular graduation mark of its Lower Half offer the blank groove of semi-annular shape, are provided with the coordinate direct line in circular graduation mark periphery between the outward flange of rectangular slab.
Concrete scheme of the present utility model is, offers the blank groove of semi-annular shape in the outer ring of the circular graduation mark of the first half of cross hairs, offers the blank groove of semi-annular shape at the inner ring of the circular graduation mark of its Lower Half.
This navigation with the using method of dip stick is:
The shipmate site of central point O of this chi or the end points of line of vector are overlapped;
A parallel or radial line are overlapped or parallel;
3. (being the blank groove of semi-annular shape) puts in order in the sign ring of the required graduation mark of correspondence;
4. link to each other with calibration points with the end points of dip stick with accommodation point or line of vector, this line is required straight line.
Advantage of the present utility model is: structure rationally, and is easy to use, and mapping is saved time rapidly, need not translation, error is minimum, and scale is clear, can not misread, during setting-out, directionality is clear and definite, is difficult for going wrong, and only is made up of a chi, and it is all very convenient to carry collection.
(4) description of drawings
Accompanying drawing is a structural front view of the present utility model.
(5) specific embodiment
The utility model is further described below in conjunction with accompanying drawing: this navigation comprises the rectangular slab of being made by transparent material (4) with dip stick, be provided with at the middle part of rectangular slab cross hairs (6) and with cross hairs central point (7) be the center of circle indicate 360 the degree circular graduation marks (3), indicate N and S mark respectively at the two ends up and down of cross hairs (6), two ends, the left and right sides indicate W and E mark, 360 degree graduation marks (3) are by N place arranged clockwise, outer ring at the circular graduation mark of the first half of cross hairs offers the blank groove of semi-annular shape (2), inner ring at the circular graduation mark of its Lower Half offers the blank groove of semi-annular shape (5), and is peripheral to being provided with coordinate direct line (1) between the outward flange of rectangular slab (4) at circular graduation mark (3).
Claims (2)
1, a kind of navigation dip stick, it is characterized in that: it comprises the rectangular slab of being made by transparent material (4), be provided with at the middle part of rectangular slab cross hairs (6) and with cross hairs central point (7) be the center of circle indicate 360 the degree circular graduation marks (3), indicate N and S mark respectively at the two ends up and down of cross hairs (6), two ends, the left and right sides indicate W and E mark, 360 degree graduation marks (3) are by N place arranged clockwise, outer ring or inner ring at the circular graduation mark of the first half of cross hairs offer the blank groove of semi-annular shape (2), inner ring or outer ring at the circular graduation mark of its Lower Half offer the blank groove of semi-annular shape (5), and be peripheral to being provided with coordinate direct line (1) between the outward flange of rectangular slab (4) at circular graduation mark (3).
2, navigation dip stick according to claim 1, it is characterized in that: the outer ring at the circular graduation mark of the first half of cross hairs (6) offers the blank groove of semi-annular shape (2), offers the blank groove of semi-annular shape (5) at the inner ring of the circular graduation mark of its Lower Half.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02229368 CN2536415Y (en) | 2002-05-10 | 2002-05-10 | Measuring rulers for navigation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02229368 CN2536415Y (en) | 2002-05-10 | 2002-05-10 | Measuring rulers for navigation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2536415Y true CN2536415Y (en) | 2003-02-19 |
Family
ID=33705692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02229368 Expired - Fee Related CN2536415Y (en) | 2002-05-10 | 2002-05-10 | Measuring rulers for navigation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2536415Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382428B (en) * | 2008-10-27 | 2011-05-25 | 王雪萍 | Navigation drawing and calculating disk |
-
2002
- 2002-05-10 CN CN 02229368 patent/CN2536415Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382428B (en) * | 2008-10-27 | 2011-05-25 | 王雪萍 | Navigation drawing and calculating disk |
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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 |