Fig. 5. Scanner estimation of average length and diameter of 947 µm wire 930.5 mm long with 0 to 40 non-parallel wire crossovers and combinations of 40 crossings with 0 to 3 overlaps (40t to 40t3—an overlap is a parallel touch or crossover) and up to two crossovers at an overlap (x or xx). Scanner setting: 23.7 p mm^-1, color photograph, high-resolution printer output, saved as tiff files. Adjustments: original = no image adjustment; sharpened = image sharpened with Photoshop (see text for parameters). Pixel width = 0.042 mm.