Specification Brand : CRISAND BulletPoint1 : The product is made of pure copper, which is not easy to and has a long service life. BulletPoint2 : Copper is a relatively soft metal. The ruler made of this material is comfortable to hold. BulletPoint3 : The scale is engraved by a precision machine. The figures are very clear and easy to read. BulletPoint4 : The product is compact, portable and suitable for outdoor operation. BulletPoint5 : Whether it's archaeological work or students doing experiments, this product is very suitable. IncludedComponents : No ItemName : Measuring Tool Portable Solid Copper Vernier Caliper 0-80mm Caliper Ruler for Archaeology ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 10 centimeters ItemPackageDimensions_Width : 3 centimeters ItemTypeKeyword : digital-calipers Manufacturer : CRISAND Material : Copper MeasurementAccuracy : 0.1mm ModelName : CRISANDeufr3v6qox ModelNumber : CRISANDgoq37edp9y NumberOfItems : 1 PartNumber : CRISANDgoq37edp9y ProductDescription : Feature: The product is made of pure copper, which is not easy to and has a long service life. Copper is a relatively soft metal. The ruler made of this material is comfortable to hold. The scale is engraved by a precision machine. The figures are very clear and easy to read. The product is compact, portable and suitable for outdoor operation. Whether it's archaeological work or students doing experiments, this product is very suitable.