CN205736537U - Multifunction set square - Google Patents

Abstract

Multifunction set square, isosceles drawing square, 30 ° of 60 ° of 90 ° of set squares, protractor, calipers function unifications.30 ° of 60 ° of 90 ° of vee gutters are dug out in isosceles right angle triangle；Center with the summit at 60 ° of angles of vee gutter as protractor, at the arc groove that the edge of protractor scale digs out, well width 0.2 3.0mm；Make the circular hole groove of a diameter of 0.2 3.0mm with summit for the center of circle at 30 ° of 60 ° 90 ° each apex of vee gutter；Isosceles right angle triangle is made row's circular hole, Circularhole diameter 0.2 3.0mm；Isosceles right angle triangle hypotenuse indicates irrational number scale, the right-angle side that 60 ° of angles face toward also indicates irrational number scale.When drawing geometric figure with this set square, instrument need not be changed continually；Conveniently draw 30 degree of the standard without arc transition, 60 degree, the angle of 90 degree；Facilitate the special graphs such as picture vertical line, parallel lines, rectangle, square；Circle can be drawn in the case of there is no compasses；It is easy to the special trigonometric function value of student memory.

Description

Multifunction set square

Technical field

This utility model relates to teaching aid, a kind of Multifunction set square.

Background technology

There is following defect in the most universal set square: 1. because of the reason of material, set square is the most every The most easily wearing and tearing in the position, summit at one angle, particularly right-angled apices damages, and just cannot draw vertical line；2., when drawing, work as pen When point signs in set square right-angled apices, because of the reason of inertia, nib is not easy to hospitalize, and easily draws unwanted line；3. because of pen There is certain distance between point and ruler, easily the apex at right angle is drawn as camber line；4. because of scale it is not at right-angled apices Starting, the length of perpendicular of required picture also cannot determine in time, extends or embrocate after needs, and the time of repeated work is many, The figure drawn is the most unsightly；The most common set square can not draw accurate parallel lines；6. student is when drawing geometric figure, needs The drawing tools such as isosceles drawing square, 30 ° of-60 ° of-90 ° of set squares, protractor, compasses, multiple instruments vary when wasting Between, the production raw material of the most multiplex several times of multiple instruments, waste, price is high.

Summary of the invention

The technical problems to be solved in the utility model is: Multifunction set square, it is therefore intended that solve above-mentioned background skill Railway Project in art, uses easily, can improve the accuracy of mapping, save the time of mapping, make mapping become lighter Pine, saves raw material, low-carbon environment-friendly.

This utility model be the technical scheme is that an isosceles drawing square, 30 ° of-60 ° of-90 ° of set squares, angulations Device, calipers function four-in-one: in isosceles right angle triangle, dig out 30 ° of-60 ° of-90 ° of vee gutters, thus possessed two kinds The function of set square, the also convenient right-angle side along isosceles right angle triangle and 30 ° of-60 ° of-90 ° of vee gutters draws parallel lines； Center with the summit at 60 ° of angles of vee gutter as protractor, at the arc groove that the edge of protractor scale digs out, well width 0.2-3.0mm, can against the circular arc line of the edge picture certain angle of groove in groove, or point out angle mark, make new with pen Type multi-functional triangular ruler has possessed the function of protractor；Do for the center of circle with summit at 30 °-60 ° each apex of-90 ° of vee gutters Go out the circular hole groove of a diameter of 0.2-3.0mm, remove the small arc-shaped transition at apex of each angle, so along 30 °-60 °- The right-angle side of 90 ° of vee gutters just can draw the right angle of standard when drawing vertical line, draws 30 ° and during 60 ° of angles, also can be easily as mould Etching draws camber line angle before going out angle rather than improvement accurately；Isosceles right angle triangle is made row's circular hole, circular hole Diameter 0.2-3.0mm, can insert in a hole fixing one-pen or pin, and another penholder enters to drag three in another hole Angle square draws circle, has possessed the function of Simple compasses；Isosceles right angle triangle hypotenuse indicates irrational number scale, at 60 ° Also indicate irrational number scale on the right-angle side that angle faces toward, so can set up in student's brain length 1,Between long Short contrast intuitive concept, it is also possible to the most directly drawSo long line segment, irrational number scale also helps student The trigonometric function value at 30 °, 45 °, 60 ° angles of memory.

The beneficial effects of the utility model are: 1. collection isosceles drawing square, 30 ° of-60 ° of-90 ° of set squares, protractor, letters Easily calipers function is integrated, and need not change instrument continually, also save and manufacture material, low-carbon environment-friendly when drawing geometric figure；2. convenience Draw 30 degree of the standard without arc transition, 60 degree, the angle of 90 degree；3. facilitate picture to contain the right angled triangle at 30 degree of angles；4. side Just vertical line, parallel lines, triangle neutrality line are drawn；5. it is easy to the special graphs such as picture right-angled trapezium, rectangle, square；6. exist Circle can be drawn in the case of there is no compasses；7. it is easy to the special trigonometric function value of student memory.

Accompanying drawing explanation

With detailed description of the invention, this utility model is further illustrated below in conjunction with the accompanying drawings:

Fig. 1 is the floor map of Multifunction set square.

Fig. 2 is the perspective view of the most calibrated Multifunction set square.

In figure: 1. isosceles right angle triangle, 2.30 ° of-60 ° of-90 ° of vee gutters, 3. arc groove, 4. circular hole grooves, 5. circle Hole, 6. irrational number scale, 7. protractor scale, 8. set square scale.

Detailed description of the invention

As it is shown in figure 1, dig out 30 ° of-60 ° of-90 ° of vee gutters 2 in isosceles right angle triangle 1, thus possess two Planting the function of set square, the also convenient right-angle side along isosceles right angle triangle 1 with 30 ° of-60 ° of-90 ° of vee gutters 2 draws flat Line；Center with the summit at 60 ° of angles of 30 ° of-60 ° of-90 ° of vee gutters 2 as protractor, digs at the edge of protractor scale 7 The arc groove 3 gone out, well width 0.2-3.0mm, the circular arc of the edge picture certain angle of groove can be against in arc groove 3 with pen Line, or point out angle mark, make Multifunction set square possess the function of protractor；At 30 ° of-60 ° of-90 ° of trianglees The each apex of groove 2 makes the circular hole groove 4 of a diameter of 0.2-3.0mm with summit for the center of circle, removes little at apex of each angle Arc transition, the so right-angle side along 30 ° of-60 ° of-90 ° of vee gutters 2 just can draw the right angle of standard when drawing vertical line, draw 30 ° During with 60 ° of angles, also can draw camber line angle before drawing angle rather than improvement accurately as masterplate easily；Straight in isosceles Make row's circular hole 5, Circularhole diameter 0.2-3.0mm on angle set square 1, one-pen or pin can be inserted in a circular hole solid Fixed, another penholder enters dragging set square in another circular hole and draws circle, has possessed the function of Simple compasses；At isosceles right angle Indicate irrational number scale 6 on set square hypotenuse, the right-angle side that 60 ° of angles face toward also indicates irrational number scale 6, so can be Set up in student's brain length 1,ItLength contrast intuitive concept, it is also possible to the most directly draw ThisLong line segment, irrational number scale also helps the trigonometric function value at 30 °, 45 °, 60 ° angles of student memory.

Claims (1)

1. Multifunction set square, is characterized in that: dig out 30 ° of-60 ° of-90 ° of vee gutters in isosceles right angle triangle；With The center that summit is protractor at 60 ° of angles of vee gutter, at the arc groove that the edge of protractor scale digs out, well width 0.2- 3.0mm；Make the circular hole groove of a diameter of 0.2-3.0mm for the center of circle with summit at 30 °-60 ° each apex of-90 ° of vee gutters； Isosceles right angle triangle is made row's circular hole, Circularhole diameter 0.2-3.0mm；Described Multifunction set square, is waiting Indicate irrational number scale on waist right angle triangle hypotenuse, the right-angle side that 60 ° of angles face toward also indicates irrational number scale.