Specification BatteriesRequired : 1 Brand : HARFINGTON BulletPoint1 : Size - Total Size: 290x200mm/11.4"x7.87"(L*W); Thickness: 0.16mm/0.006". BulletPoint2 : 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. BulletPoint3 : Features - Transparent film SEC pattern used for quality inspection and defect size estimation, with high accuracy, excellent transparency, minimal error caused by temperature, and long-term use. In addition, it has a protective film on the surface, which is waterproof and scratch-resistant to avoid inaccurate scales. BulletPoint4 : Applications - The high-precision 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. BulletPoint5 : 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 don't need expensive measuring instruments to get accurate readings. BulletPoint6 : 【Data output options】 Built-in USB and Bluetooth for computer data transfer and documentation. Enables efficient analysis. BulletPoint7 : ✔Great value. An affordable tool providing accurate data to optimize harvesting, storage, and sales timing for maximum flavor and profits. Pays for itself quickly. ExternallyAssignedProductIdentifier1 : 0658361248021 ExternallyAssignedProductIdentifier2 : 658361248021 IncludedComponents : Instruction manual x1 Certificate of conformity x1 ItemName : HARFINGTON High Precision SEC Size Estimation Chart 27x17cm Covered Transparency Flaw Detection Film Ruler for Diameter Area and Line Width Defects Measuring ItemPackageDimensions_Height : 0.39 inches ItemPackageDimensions_Length : 12.2 inches ItemPackageDimensions_Width : 8.66 inches ItemPackageQuantity : 1 ItemTypeKeyword : hardness-testing-apparatus Manufacturer : HARFINGTON Material : Polyethylene Terephthalate MeasurementAccuracy : <±1H(N) NumberOfBoxes : 1 NumberOfItems : 100 PartNumber : hta230918hh000095 ProductDescription : 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. Transparent film SEC pattern used for quality inspection and defect size estimation, with high accuracy, excellent transparency, minimal error caused by temperature, and long-term use. In addition, it has a protective film on the surface, which is waterproof and scratch-resistant to avoid inaccurate scales. The high-precision 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.