Specification Brand : INSIZE BulletPoint1 : Made of stainless steel (4799-1300 is made of carbon steel) BulletPoint2 : Satin chrome plated scale BulletPoint3 : With clamping screw BulletPoint4 : Made in China BulletPoint5 : Great Material : The angle meter adopting premium ABS material with a sturdy structure , not easy to break and has good durability for work Color : Protractor 45° ExternallyAssignedProductIdentifier : 7098742432589 ExternallyAssignedProductIdentifier1 : 6928640317415 ExternallyAssignedProductIdentifier2 : 06928640317415 Hazmat : auto-grounding IncludedComponents : inc ItemName : INSIZE 4799-1150 Protractor, 0-180 Degree, 5.9" x 7.9" ItemPackageDimensions_Height : 30.9 centimeters ItemPackageDimensions_Length : 4.2 centimeters ItemPackageDimensions_Width : 12.1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : construction-protractors Manufacturer : INSIZE Material : Iron ModelNumber : 4799-1150 NumberOfItems : 1 PartNumber : 4799-1150 ProductDescription : Specification : Item Type : Inclinometer Material : ABS Measuring Range : 130° 0° 130° , that is 50° 90° 0° 90° 50° . 1 minute to 8 minutes with 0 . 5 minute accuracy . 10% , 12% , 15% , 18% , 20% . Accuracy : ± 1° Application : It is widely used in civil engineering , architectural engineering , interior decoration and other projects involving slope and inclination .