Specification BatteriesRequired : 1 Brand : HARFINGTON BulletPoint1 : Size - Total Size: 275x205mm/10.8"x8.1"(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. Color : Black ExternallyAssignedProductIdentifier1 : 0760714629750 ExternallyAssignedProductIdentifier2 : 760714629750 IncludedComponents : Shore A Durometer ItemName : HARFINGTON High Precision SEC Size Estimation Chart 27x18cm 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 ModelName : 2023062002 ModelNumber : LX-A-1 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : hta230918hh000096 PowerSourceType : Battery Powered 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.