Specification BatteriesIncluded : 1 Brand : Carolina BulletPoint1 : Inexpensive grating used in introductory work with spectra BulletPoint2 : Splits white light into its components cleanly and, unlike glass prisms, will not break if dropped BulletPoint3 : This linear diffraction grating has 1,000 lines/mm and is mounted in a standard 2 x 2" holder BulletPoint4 : Sold in packs of 12 slides. BulletPoint5 : Aluminum case with power of the lens marked on it for easy storage. Color : Black Department : Unisex ExternallyAssignedProductIdentifier : 3754919060088 ExternallyAssignedProductIdentifier1 : 0840132658447 ExternallyAssignedProductIdentifier2 : 840132658447 ImportDesignation : Imported IncludedComponents : see details ItemName : Diffraction Grating, Pack Of 12 ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 50 centimeters ItemPackageDimensions_Width : 1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : science-classroom-optics-kits Manufacturer : Carolina Biological Supply Company Material : Glass ModelName : 405nm ModelNumber : 3M-BLA NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : 755230 ProductDescription : Inexpensive grating used in introductory work with spectra. Cleanly splits white light into its components and, unlike glass prisms, will not break if dropped. This linear diffraction grating has 1,000 lines/mm and is mounted in a standard 2 x 2" holder. Pack of 12. ProductSiteLaunchDate : 2011-10-24T19:32:56.936Z Size : One Size Style : Modern SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 WarrantyDescription : see details