HARFINGTON 5pcs High Precision SEC Size Estimation Chart 8x55cm 02mm Transparency Flaw Detection Film Ruler for Diameter and Line Width Defects Measuring

Size Total Size 98x55mm386x217LW Thickness 012mm0004 Material The SEC size estimation chart is made of PET clear plastic which is resistant and unbreakable This film transparent ruler is very thin as thin as paper and much thinner than ordinary rulers Features Transparent film SEC pattern used for quality inspection and defect size estimation with high accuracy excellent transparency minimal error caused by temperature and longterm use Applications The highprecision film ruler is perfect for factories research institutes measuring rooms and workshops It can be used to measure the area of a wide variety of products accurately detect and calibrate various measuring instruments measure the reduction rate of photo printing films and detect the size of optical projection maps etc Notice You can use it with a magnifying glass A magnifying glass makes it easy to measure the length of two or more consecutive points We dont need expensive measuring instruments to get accurate readings.