BRAND NEW Gage Block Accessory 27 Pc Set - For Rectangular Gage Blocks Provided with Storage Case Set Includes:-(1) Base Block: -Overall Dimension: 4''L x 2-3/4''W x 1-5/8''H *Estimate Only* -Weight: 4.50 Lbs *Estimate Only* -Height Accurancy: : +/- 0.00002''-(1) Scriber Point -Flatness Per 2'' = 0.00002''-(1) Center Point -Concentricity: +/- 0.0004''-(2) Points -Concentricity: +/- 0.0002''-(10) Cylindrical Jaws -Radius +/- 0.00003'', Pair: +/- 0.00004''-(2) Flat Jaws -Parallelism = 0.00004''-(2) Reference Jaws -Accuracy Of Reference Line To Measuring Surface +/- 0.0002''-(4) Bevel End Jaws -Flatness Per 2'' = 0.00002''-(4) Holders Working Surfaces Accurately Ground And Lapped Expand The Use Of Rectangular Gage Blocks With These Accessories Cylindrical Jaws Are Used For Inside And Outside Measurements And For Setting Instruments Accuracy Flat Jaws Have 2 Sides Lapped And Accurately Flat, Parallel And To Size Unit Dim L x W x H (in): 17 x 2 x 9-1/2 *Estimated* Unit Weight: 13 lbs Quantity: 1 Shipping:Small Item Shipping