CN87209575U

CN87209575U - Multipurpose drawing instrument equipped with gravity angle indicator and compass

Info

Publication number: CN87209575U
Application number: CN 87209575
Authority: CN
Inventors: 余智翔; 况明中
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-06-24
Filing date: 1987-06-24
Publication date: 1988-03-30

Abstract

The utility model discloses a multipurpose drawing instrument provided with gravity angle indicator and compass. In a long term, people always use a setsquare, a ruler, etc. to draw the lines or angles. To draw a certain angle and lines with certain angle, the matching of more than two instruments is always needed, so the drawer is inconvenient. The utility model provides a setsquare, or a ruler, or a drawing board provided with gravity angle indicator and compass. Any angle and any line with certain angle can be drawn on the paper or on the blackboard.

Description

Multipurpose drawing instrument equipped with gravity angle indicator and compass

The utility model belongs to a kind of drawing instrument.

For a long time, people's normal set square, chi or other drawing instrument draw angle, lines, parallel lines, polygon etc. of using in drawing.Need the instrument more than two to cooperate in many cases, certain angle of just drawing and lines with certain angle.This just brings all inconvenience to the illustrator.Prior art is referring to the utility application multifunctional triangle (CN85205741) in existing set square and day bridge and ford-help Tai'an.

The purpose of this utility model, provide a kind of drawing instrument that can show the setting-out angle automatically that gravity angle display and compass are housed, make the designer not need Other Instruments to cooperate, just can be according to the angle that angle display and compass show draw arbitrary line, arbitrarily angled and arbitrary polygon.

The utility model is achieved like this.On a drawing instrument (comprising set square, chi, drawing board), a gravity angle display and the compass that can indicate 0 ° of-360 ° of scope is installed.The two can be installed respectively, also can be fitted together.

Fig. 1 is the set square that gravity angle display and compass are housed.

(1) is the set square base portion among the figure.

(2) be the pointer of angle display.

(3) be the dial of angle display.

(4) be the compass pointer.

(5) be the compass dial.

When drawing on paper big perpendicular to ground or gradient or blackboard, set square is affixed on paper or blackboard surface, pointer (2) is promptly sagging under the gravity effect, goes up the certain angle of indication at dial (3).If draw line perpendicular to horizontal plane, can rotate set square, make pointer point to 90 ° or 270 °, can draw perpendicular to the straight line of horizontal plane, as shown in Figure 2 along the hypotenuse of set square.Be parallel to the line of horizontal plane as drawing, can rotate set square, make pointer (2) aim at 0 ° or 180 °, along the hypotenuse of set square, can draw is parallel to the line of horizontal plane, as shown in Figure 3.If draw and horizontal plane line at an angle, can rotate set square and make pointer point to this angle, can draw.Parallel lines if draw more than two, the perhaps line that intersects at an angle, perhaps polygonal shape also can be drawn by above method.

When drawing on little paper of level or gradient or blackboard, set square is affixed on paper or blackboard surface, the pointer of compass promptly points to the north and the certain scale of indication on dial.At this moment, the straight line that on paper, can draw.Rotate set square to the another location, compass promptly points to another scale, and this scale and former scale poor is the angle that set square rotates.At this moment, along the angle between drawn straight line of set square and the original straight line, be the difference between two scales of pointer indication.According to this method, use this drawing instrument, under the situation that does not need Other Instruments to cooperate, can on horizontal plane or gradient little paper or blackboard, draw angle, lines, parallel lines or polygon arbitrarily.

The utility model also can be made into ruler and the multipurpose drawing board that gravity angle display and compass are housed, and sees Fig. 4, Fig. 5.

Claims

1, a kind of drawing instrument is equipped with a gravity angle display and the compass that can indicate angle above it is characterized in that.

2, drawing instrument as claimed in claim 1 is characterized in that this instrument is a set square that gravity angle display and compass are housed.

3, drawing instrument as claimed in claim 1 is characterized in that this instrument is a ruler that gravity angle display and compass are housed.

4, drawing instrument as claimed in claim 1 is characterized in that this instrument is a multipurpose drawing board that gravity angle display and compass are housed.