JPS59192389U - 100% full circle protractor - Google Patents
100% full circle protractorInfo
- Publication number
- JPS59192389U JPS59192389U JP8765583U JP8765583U JPS59192389U JP S59192389 U JPS59192389 U JP S59192389U JP 8765583 U JP8765583 U JP 8765583U JP 8765583 U JP8765583 U JP 8765583U JP S59192389 U JPS59192389 U JP S59192389U
- Authority
- JP
- Japan
- Prior art keywords
- intersection
- full circle
- percentage
- reference lines
- protractor
- 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.)
- Pending
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案の全円１００％分度器の正面図を示す
。
１・・・・・・全円１００％分度器、２・・・・・・四
角形プレート、３・・・・・・スケール面、４，５・・
・・・・基準線、６・・・・・・交点、７・・・・・・
パーセント目盛、８． ９． １０゜１１・・・・・・
パーセント読取り穴、１２． １３． １４゜１５・・
・・・・分割面。FIG. 1 shows a front view of the fully circular 100% protractor of this invention. 1... Full circle 100% protractor, 2... Square plate, 3... Scale surface, 4, 5...
...Reference line, 6...Intersection, 7...
Percentage scale, 8. 9. 10°11...
Percent reading hole, 12. 13. 14°15...
...Divided surface.
Claims (1)
線を設けると共に、該２本の基準線の交点を中心とする
円を１００等分するパーセント目盛を設け、さらに前記
交点を中心として対称なる２組の対向分割面にそれぞれ
該交点を中心とした円弧状のパーセント読取り穴を対称
位置に複数配列し、且つ、隣りあう分割面に形成した複
数列のパーセント読取り穴がそれぞれ重複しないように
径差をもたせたことを特徴とする全円１００％分度器。Two orthogonal reference lines are provided on the scale surface of the polygonal plate, and a percentage scale is provided that divides a circle centered on the intersection of the two reference lines into 100 equal parts, and is symmetrical about the intersection. A plurality of arc-shaped percentage reading holes are arranged in symmetrical positions around the intersection point on two sets of opposing dividing surfaces, respectively, and the plurality of rows of percentage reading holes formed on adjacent dividing surfaces are arranged so that they do not overlap. A 100% full circle protractor characterized by a difference in diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8765583U JPS59192389U (en) | 1983-06-07 | 1983-06-07 | 100% full circle protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8765583U JPS59192389U (en) | 1983-06-07 | 1983-06-07 | 100% full circle protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59192389U true JPS59192389U (en) | 1984-12-20 |
Family
ID=30217569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8765583U Pending JPS59192389U (en) | 1983-06-07 | 1983-06-07 | 100% full circle protractor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59192389U (en) |
-
1983
- 1983-06-07 JP JP8765583U patent/JPS59192389U/en active Pending
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