CN2046812U - Proportion ruler - Google Patents
Proportion ruler Download PDFInfo
- Publication number
- CN2046812U CN2046812U CN 89202206 CN89202206U CN2046812U CN 2046812 U CN2046812 U CN 2046812U CN 89202206 CN89202206 CN 89202206 CN 89202206 U CN89202206 U CN 89202206U CN 2046812 U CN2046812 U CN 2046812U
- Authority
- CN
- China
- Prior art keywords
- straightedge
- ruler
- proportional
- scale
- long direction
- 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.)
- Withdrawn
Links
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a proportion ruler, which is that six general ratio scales are engraved on a straightedge. The manufacturing method is that two channels are dug on the upper part of the surface of the straightedge along the long direction of the straightedge; the scales are respectively graved on two edges along the long direction of the straightedge and the four edges which are parallel to the two edges along the long direction of the straightedge between the two channels. The proportion ruler is that the six ratio scales are arranged on one plane surface. The utility model has the advantages of reasonable structure, convenient operation, saving time and high work efficiency.
Description
Existing engineer's scale, a kind of is to arrange two to three kinds of different proportion yardsticks on limit of ruler, and the shortcoming of this engineer's scale is, and several yardsticks concentrate on the limit, use and easily make mistakes, and ratio scale is few, and use is restricted.Another kind is a triangular proportional scale, though six kinds of ratio scale commonly used are arranged, because of six kinds of yardsticks not in one plane, rolling chi body is very inconvenient when select using the different proportion yardstick, and this engineer's scale be prismatic use deposit all inconvenient.
The purpose of this utility model just provides a kind of easy to use, Proportional straightedge accurately.
The utility model is finished as follows: straight chi length direction has dug two grooves on the top of ruler face, is carved with six kinds of different ratio scale such as 8:1,10:1,5:1,4:1,2.5:1,2:1 respectively on the four edges parallel with these both sides then on two limits of straight chi length direction with in two grooves.The Proportional straightedge of this six ratio scale on same plane, rational in infrastructure, be convenient to deposit, easy to operate, accurate, save time fast, can increase work efficiency greatly.
Description of drawings: accompanying drawing is the vertical view of Proportional straightedge.Proportional straightedge (1), 8:1 ratio scale (2), 10:1 ratio scale (3), 5:1 ratio scale (4), 4:1 ratio scale (5), 2.5:1 ratio scale (6), 2:1 ratio scale (7).
Proportional straightedge (1) thickness with routine use conveniently be advisable (2---3mm), width be advisable can mark to make six kinds of yardsticks (45---55mm), length with routine use convenient and six kinds of yardstick arrangements neatly be advisable (320---340mm), the manufactured materials lucite.
Claims (2)
1, Proportional straightedge is characterized in that the straight chi length direction in top of this ruler face has dug two grooves.
2, Proportional straightedge according to claim 1 is characterized in that this ruler adopts lucite to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89202206 CN2046812U (en) | 1989-02-24 | 1989-02-24 | Proportion ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89202206 CN2046812U (en) | 1989-02-24 | 1989-02-24 | Proportion ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2046812U true CN2046812U (en) | 1989-11-01 |
Family
ID=4859988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89202206 Withdrawn CN2046812U (en) | 1989-02-24 | 1989-02-24 | Proportion ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2046812U (en) |
-
1989
- 1989-02-24 CN CN 89202206 patent/CN2046812U/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |