Clock Nested Triangles Metal Sign

About the Nested Triangles design

Thin triangle outlines stack outward from a solid black triangle at the center, each one larger than the last and turned a little further, so the whole face twists like a spiral staircase seen from above. The corners never line up, leaving a jagged rim with points jutting to the upper right, the far left and the bottom. Where the outlines cross, they slice the white into narrow splinters and wedges. A single tiny dot of white marks the middle of the filled triangle.