Diameter black outline icon
Outline circle with a horizontal double-headed arrow spanning its width
About the Diameter black outline icon
A thin open circle contains a straight horizontal line running through its center, capped with arrowheads at both ends that stop just inside the rim. The reading is immediate: the full width across a round shape. Use it in CAD and drawing toolbars, engineering spec sheets, pipe and fitting catalogs, product dimension tables, and machining or 3D printing settings.
The arrow sits slightly above the vertical midpoint, which keeps the mark optically centered, and its stroke is lighter than the circle so the two elements stay distinct. Pair it with radius, circumference, angle and ruler icons. At small sizes the arrowheads thicken, so 24 px is a sensible floor.
This is the black outline version of the diameter icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
Download it free as a scalable SVG vector or transparent-background PNG in seven sizes (16 to 512px), copy the SVG code straight into your project, or open it in the free online editor to change colors, apply gold, silver, neon and gradient styles, animate it, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
