Protractor Semicircle Ruler black filled icon
Outline semicircular protractor with degree marks, tilted diagonally
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About the Protractor Semicircle Ruler black filled icon
A half-circle protractor rotated so its straight edge runs from the upper left to the lower right, with short degree ticks spaced around the curved rim and a second inner arc marking the measuring window. It stands for angles, geometry and technical drawing. Use it on math learning apps, school supply shops, engineering course pages, design tool banners and classroom worksheets.
The tilt gives the flat baseline a diagonal that fills the square frame better than an upright version, and the inner arc keeps the body from looking solid. It pairs with ruler, compass and set square icons. Below 32 pixels the tick marks blur, so scale up.
This is the solid black filled version of the protractor semicircle ruler icon: a bold silhouette that reads clearly at 16-24 px and on dark or busy backgrounds, and prints well in one colour.
Get it free as an SVG vector or transparent PNG (16-512px), copy the SVG code, or restyle it in the free online editor — recolor any part, add gold, neon or gradient effects, animate it, or export EPS, PDF and DXF.
Free for personal and commercial use with attribution.
