JPS6472899A - Rotary drawing board and protruding point rule - Google Patents

Rotary drawing board and protruding point rule

Info

Publication number
JPS6472899A
JPS6472899A JP22975387A JP22975387A JPS6472899A JP S6472899 A JPS6472899 A JP S6472899A JP 22975387 A JP22975387 A JP 22975387A JP 22975387 A JP22975387 A JP 22975387A JP S6472899 A JPS6472899 A JP S6472899A
Authority
JP
Japan
Prior art keywords
drawing board
horizontal ruler
rotary
vertical direction
board
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
Application number
JP22975387A
Other languages
Japanese (ja)
Inventor
Shoichiro Ishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP22975387A priority Critical patent/JPS6472899A/en
Publication of JPS6472899A publication Critical patent/JPS6472899A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To quickly create an accurate drawing without soil by rotatably mounting a center type drawing board of a drafting board, and mounting a horizontal ruler with projections which can be displaced in the vertical direction to the drawing board. CONSTITUTION: A rotary drawing board B is fixed in a state that a drawing board A and a protractor graduation E of the rotary drawing board B are fitted, and the drawing paper is set in the center of the rotary disc B in this state. Then a horizontal ruler is displaced in a vertical direction and positioned. The rotary disc B is freely rotatable, so that the angle and gradient are determined corresponding to the horizontal ruler. When the same many lines are drawn, the drawing board B is fixed, the horizontal ruler is successively moved in parallel in the vertical direction by using a tangent screw of the horizontal ruler, whereby the continuous lines are drawn at specific intervals. On this occasion, as a rear face of the horizontal ruler comprises projections, a surface of the drawing paper can be prevented from soiled by the lead of a pencil in accompany with the displacement of the horizontal ruler.
JP22975387A 1987-09-16 1987-09-16 Rotary drawing board and protruding point rule Pending JPS6472899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22975387A JPS6472899A (en) 1987-09-16 1987-09-16 Rotary drawing board and protruding point rule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22975387A JPS6472899A (en) 1987-09-16 1987-09-16 Rotary drawing board and protruding point rule

Publications (1)

Publication Number Publication Date
JPS6472899A true JPS6472899A (en) 1989-03-17

Family

ID=16897144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22975387A Pending JPS6472899A (en) 1987-09-16 1987-09-16 Rotary drawing board and protruding point rule

Country Status (1)

Country Link
JP (1) JPS6472899A (en)

Similar Documents

Publication Publication Date Title
JPS5319066A (en) Calculator with calender
DE3860493D1 (en) WRITING DEVICE IN THE FORM OF A BALLPOINT PEN WITH TWO MINES.
JPS5215354A (en) Digitizer
JPS6472899A (en) Rotary drawing board and protruding point rule
JPS5441624A (en) Trend graph display unit of variable accuracy
BR7807023A (en) INK PEN WITH REFILL
CN208760270U (en) A kind of multifunctional angular parallel rule
GB1296886A (en)
JPS54156730A (en) Ball point for balllpoint pen with waterrsoluble ink
FR2575704B1 (en) PEN, PENCIL, OR THE LIKE WRITING INSTRUMENT WITH A RETRACTABLE WRITING POINT
GB590105A (en) Improvements in or relating to drawing material
JPS52110124A (en) Writing pen tip
JPS52123722A (en) Ball pen ink
GB1436018A (en) Draughting device
IT1107525B (en) LAMINAR NIB WITH SLOT FOR LIQUID INKS EQUIPPED WITH BALL POINT
JPS5342930A (en) Under writing paper for free hand drafting
JPH0237597Y2 (en)
JPS57153201A (en) Tape measure and its production
BR7504783A (en) IMPROVEMENTS IN PEN, PENCIL OR ANALOG OBJECT
CN87212742U (en) Card for drawing circle
JPS52110125A (en) Writing pen tip
KR780000161Y1 (en) Ball point pen with flute
JPS6478890A (en) Copy board
Hartwig Pen Plotter Increases CAD Accuracy
Angle Airflow modification due to a change in surface roughness