Symbol Radar Metal Sign

About the Radar design

Two heavy rings sit one inside the other, and a solid dot fills the middle, set a touch above and left of true center. A thick diagonal runs from that dot down to the lower right at an even slant, ending flush against the outer ring and cutting the inner one open where it crosses. Where dot meets diagonal the steel flows together without a seam, so the sweep looks thrown off the dot rather than laid over it.