... .5mmA single detection technology:1.1 Detection of content: the diameter, breaking strength, elongation, dry shrinkage and other physical indicators ... C, 1000 mm steel ruler, micrometer (precision 0.001) or laser diameter measurement, electronic strength tester, scissors and so on.1.4 ... or direct measurement of the laser measuring instrument on 10 points, the mean value for the diameter of a few. Unit: ...