SE0000150D0 - Special ruler for dividing angles - Google Patents

Special ruler for dividing angles

Info

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
Application number
SE0000150A
Other languages
Swedish (sv)
Other versions
SE0000150L (en
SE523921C2 (en
Inventor
Bertil Holgersson
Original Assignee
Bertil Holgersson
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bertil Holgersson filed Critical Bertil Holgersson
Priority to SE0000150A priority Critical patent/SE523921C2/en
Publication of SE0000150D0 publication Critical patent/SE0000150D0/en
Publication of SE0000150L publication Critical patent/SE0000150L/en
Publication of SE523921C2 publication Critical patent/SE523921C2/en

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.
SE0000150A 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 SE523921C2 (en)

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)

* Cited by examiner, † Cited by third party
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

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