MODERNER QXD-50 Large wide-channel Fineness gauge
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Big wide-channel0~50μmμm
Large wide-channel, range 0~50μm, Graduation 5μm, scraper material stainless steel, with two scales of micron and Hegman, applicable to GB/T 1724, GB/T 13217.3, ISO 1524, ASTM D1210