Rolling ruler measuring
Features:
(Multi-function): can be used as a compass, horizontal ruler, ruler, protractor, circle – template and angle template.
(Practicability): Combined roller rulers, ideal for drawing vertical lines, parallel lines, graphics, circles, 3D drawings, etc.
(Wide Application): Ideal for students, artists and designers
Multifunctional parallel ruler): easily draw horizontal and vertical parallel lines, draw circles, curves,
arches and other geometric figures. Use the built-in protractor to measure and draw angles.
(Built-in sliding roll): Suitable for use on drawing paper and canvas. The drawing is stable and not easy to tilt.
Various formulas and conversion factors are attached to the drum for easy viewing.
How to use:
*Protractor use:
Align the center of the protractor to the edge of the ruler with the top of the surveyor foot, and at the same time
coincide the protractor scale with the reference line, then various angles can be measured on the edge of the ruler.
*Draw the arc and curve:
Insert the pen into the small hole at the end of the ruler to make the center of the circle,
Insert another pen into another hole and rotate the ruler body 360° to draw a circle.
Material : plastic
Main Color: Clear
Measuring range: 30 cm / 12 inches.
Package includes:
1 x Multipurpose Parallel Drawing Bearing Ruler