var rings = 10; var spacing = 5; // in units such as um var pixelsPerUnit = 1; var unit = "pixel"; var xcenter, ycenter; var markSize = 5; // Draws concentric circles centered at (xcenter, ycenter) macro "Concentric Rings Tool -C00b-O00ff-O4477" { requires("1.30m"); getCalibration(); getCursorLoc(xcenter, ycenter, z, flags); makeOval(xcenter-2, ycenter-2, 4, 4); run("Draw"); spacingInPixels = spacing*pixelsPerUnit; radius = spacingInPixels; for (i=0; i