Professional compass rulers

Abstract

A ruler for draws or measurements of circle, straigth line, and angle. The line drawing or measuring is sliding belong in the ruler's track; which is at middle and parallel on the ruler's length. These techniques are combined for a simple ruler.

Description

BACKGROUND OF THE INVENTION

Field of the Invention

Description of Related Art including information disclosed under 37 CFR 1.97 and 1.98.

“Not Appliction”

BRIEF SUMMARY OF THE INVENTION

The general idea of the Professional compass-Rulers is showing the easily to compares of the SAE and Metric Unit for the measurement, sketch, or use as a compass for drawing a circle.

The ruler's technique is combination of the straigth ruler, protractor, and compass to become a simple ruler for sketch or draw the line belong in the ruler's track at middle and parallel on the ruler's length.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

“Not Applicable”

DETAILED DESCRIPTION OF THE INVENTION

The Professional Compass-Rulers is a combination of the techniques of compass, protractor and ruler; which uses for finding, drawing or measuring of an angle, circle or straigth line at the central of the ruler's length.

The technique drawing the lines is the pen travel belong in the ruler's track through on the drawing paper. The ruler's track is straigth from O dimension to the end of the ruler's length.

For finding or drawing is starting from the central line or the ruler's track at 180 or O and then reading the number of an angle. If the angle is larger than 180 on the left of a central line, the degree appear on the protractor scale is as the same of the degree at the opposite straigth to another side below of an axis; add these numbers for the degree of an angle.

The Professional Compass-Rulers may use for compass to drawing the circle which have the radius within on the ruler's track. For drawing a circle; the drawer is hold down the spindle screw, this point is center of the circle, and then sliding the drawing point belong in the ruler's track for a radius and swing the ruler to make a circle.

The material for reproduction of a Professional compass-Ruler may be made by cleared mica, thin wood or stailess steel; and the ruler's track is made by magetic for easily slide or clutch on tight when drawing.

Claims

1. A combination of compass, ruler and protractor for drawing and measuring on the middle of the ruler's length.