MICROSCOPIC EXAMINATION OF TEXTILE FIBRES. 9 ings become apparent with a magnifying power of 200 to 250 times, and with a 300-power the markings are well defined and three systems of striation are recognisable. When the power is increased a number of laterally arranged hexagons are revealed.… … FIG. 5. Pleurosigma angulatum. Test object for the analytical power of medium and high powers : 200-400 ; 400-800 times. of a stand on which is mounted a simple lens. At a distance equal to the focal lens of the glass is situated a stage for supporting the object to be dissected, which, with the…
Textile fabrics -- Testing · Yarn -- Testing
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