Commentary: two instruments for fiber identification*

A scanning transmission energy analyzing microscope (STEAM) and an automated microprobe are described and their use explained. In the former instrument the image is scanned across an aperture and quantitative information recorded. In the latter the movement of the beam can be programmed and the x-ray data taken into storage. ImagesFIGURE 1.FIGURE 4.FIGURE 5.FIGURE 6.FIGURE 8.FIGURE 10.