YarnDensityLightTester用途：线密度光栅，通过折射光可快速确定针织或机织物每厘米或每英寸内的纱线根数。Throughfractivelightcanquicklydeterminethenumberofyarn-kanpercmperinchofknitwearaandfabrics.货号ModelsTNG57A坚韧弹性塑料材质,分成三组Tenaciousflexibleplasticmaterial3groupsModelAA,Range100-170lines/inchModelAC,Range20-90lines/inchModelAB,Range50-120lines/inchTNG57B透明玻璃材质,分成五组Transparentglassmaterial5groupsModelBA,Range30-120lines/inchModelBD,Range50-140lines/inchModelBB,Range90-170lines/inchModelBE,Range120-190lines/inchModelBC,Range170-240lines/inch)