SE0000150D0 - Special ruler for dividing angles - Google Patents
Special ruler for dividing anglesInfo
- Publication number
- SE0000150D0 SE0000150D0 SE0000150A SE0000150A SE0000150D0 SE 0000150 D0 SE0000150 D0 SE 0000150D0 SE 0000150 A SE0000150 A SE 0000150A SE 0000150 A SE0000150 A SE 0000150A SE 0000150 D0 SE0000150 D0 SE 0000150D0
- Authority
- SE
- Sweden
- Prior art keywords
- ruler
- central line
- thick
- lines
- special ruler
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
- B43L13/002—Angle intersecting devices
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The transparent ruler has a black line (0.2 mm thick) running down the middle between its two ends, forming a central line. Thinner lines (0.1 mm thick) spaced apart by intervals of 5 mm extend the full length of the ruler, parallel to the central line, between the central line and one length edge of the ruler. The other half of the ruler is marked in the same way, except that the four lines measure only 25 mm in length from one end of the ruler. Two cross-direction lines (0.2 mm thick) extending at 90 deg. to the central line are located at distances of 5 and 25 mm from one end of the ruler.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0000150A SE523921C2 (en) | 2000-01-19 | 2000-01-19 | Ruler for dividing angle into three equal segments, has length direction lines provided on either side of central line, and two spaced apart cross direction lines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0000150A SE523921C2 (en) | 2000-01-19 | 2000-01-19 | Ruler for dividing angle into three equal segments, has length direction lines provided on either side of central line, and two spaced apart cross direction lines |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0000150D0 true SE0000150D0 (en) | 2000-01-19 |
SE0000150L SE0000150L (en) | 2001-07-20 |
SE523921C2 SE523921C2 (en) | 2004-06-01 |
Family
ID=20278150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0000150A SE523921C2 (en) | 2000-01-19 | 2000-01-19 | Ruler for dividing angle into three equal segments, has length direction lines provided on either side of central line, and two spaced apart cross direction lines |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE523921C2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10994569B2 (en) | 2018-02-06 | 2021-05-04 | Ronald Harvey Rosenfield | Angle trisector, as validated to perform accurately over a wide range of device settings by a novel geometric forming process; also capable of portraying finite lengths that only could be approximated by means of otherwise applying a compass and straightedge to a given length of unity; that furthermore functions as a level whose inherent geometry could be adapted for many other uses such as being incorporated into the design of a hydraulic car lift |
-
2000
- 2000-01-19 SE SE0000150A patent/SE523921C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE0000150L (en) | 2001-07-20 |
SE523921C2 (en) | 2004-06-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |