Specification Brand : Fowler BulletPoint1 : Made of hardened steel, these economy squares have true right angles both inside and outside BulletPoint2 : Beams and blades ground and lapped for straightness and parallelism BulletPoint3 : Length of hardened blade is measured from inner edge of beam to end of blades BulletPoint4 : Beam grooved at inner corner for clearance of burrs and dirt.Squareness of the blade edge to the working face of the stock is ± 0.0006" for 2" and 3" models, and ± 0.0008" for 4" and 6" models BulletPoint5 : Includes inspection certificate Color : Factory CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 646795115156 ExternallyAssignedProductIdentifier2 : 0646795115156 ExternallyAssignedProductIdentifier3 : 00646795115156 GpsrSafetyAttestation : 1 GraduationRange : 0.0005 ten_thousandths_inches ItemName : Fowler 52-432-246-0 Machinist Hardened Steel Square Set, 2", 3",4",and 6" Blade Size ItemPackageDimensions_Height : 22.6 centimeters ItemPackageDimensions_Length : 4.1 centimeters ItemPackageDimensions_Width : 15.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : carpentry-squares Manufacturer : Fred V. Fowler Company, Inc. Material : Alloy Steel MeasurementAccuracy : Less than 0.06mm per 60mm ModelNumber : 52-432-246-0 NumberOfItems : 1 PackageLevel : unit PartNumber : 52-432-246-0 ProductDescription : This precision flat machinist square is made by Kinex Measuring who has been in the business of making precision measuring tool since 1906. This square is perfect for the professional machinist, meticulous wood worker, or the DIY perfectionist. It is machined from one solid steel blank and will never go out of square. The faces have a milled finish, while the reference edges are lapped for straightness and parallelism. Manufactured to strict German DIN 875/0 standards and guaranteed square to within 15 microns or 0.0005 inches over the entire length of the longest edge (that’s just five ten-thousandths of an inch). Comes in a padded box. Includes signed inspection certificate. ProductSiteLaunchDate : 2004-11-09T05:00:01-00:00 Size : 2", 3",4",and 6" Blade Size StreetDate : 2011-09-21T00:00:01Z Style : Square SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 44111800