Specification BatteriesRequired : 1 Brand : Starrett BulletPoint : 1 year warranty offered by Fowler High Precision BulletPoint1 : Base Size: 1-1/4" X 1-1/4" X 1-5/16" BulletPoint2 : Small bodied magnetic base with powerful holding force BulletPoint3 : Base easily mounted on machine tools or work surfaces BulletPoint4 : Base quickly released by a simple twisting action BulletPoint5 : Includes two rods BulletPoint6 : One rod is used for standard machine shop clamps measures 5/16", 1/4" and 7/32" O.D BulletPoint7 : Second rod, 1/4" in diameter with lug is used for standard dial gages and dial test indicators Color : Factory ExternallyAssignedProductIdentifier1 : 0646795123557 ExternallyAssignedProductIdentifier2 : 646795123557 ExternallyAssignedProductIdentifier3 : 00646795171589 IncludedComponents : Manufactuered Brand Product ItemName : #154F - 1-3/4 to 2-1/4'' - Adjustable Parallel ItemPackageDimensions_Height : 3 inches ItemPackageDimensions_Length : 8.75 inches ItemPackageDimensions_Width : 5.625 inches ItemPackageQuantity : 1 ItemTypeKeyword : dial-calipers Manufacturer : The L.S. Starrett Company Material : Ceramic MeasurementAccuracy : 0.0008" ModelNumber : 52-725-315-0 NumberOfBoxes : 1 NumberOfItems : 1 PackageLevel : unit PartNumber : 52-725-315-0 ProductDescription : Can be inserted in openings and ex-panded to size Size of opening can then be determined by measuring parallels with micrometer Parallels consist of two dovetailed pieces that slide smoothly and can be easily adjusted Smaller sizes, A, B, and C are locked by one screw while larger sizes, D, E, F, have two lock screws All parallels are 9/32 thick. Technical Specifications Model Number: 154F Size: 1-3/4 to 2-1/4 (44.4-57.1mm) Type: Adjustable Parallel Brand Name: Starrett ProductSiteLaunchDate : 2013-03-09T01:23:48.959Z Range : 6 inches Resolution : 0.0005" Size : Surface Grinding, Measures 1" x 0.62" StreetDate : 2013-02-14T05:00:00-00:00 Style : Digital SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1