Technical Guidance N References N9 to N39 N Technical Guidance Turning Edition .....................................................N10 Milling Edition.......................................................N15 Endmilling Edition ...............................................N19 Drilling Edition ......................................................N22 SUMIBORON Edition ...........................................N27 References SI Unit Conversion List .......................................N31 Steel and Non-Ferrous Metal Symbols Chart (1)....N32 N Steel and Non-Ferrous Metal Symbols Chart (2)....N33 Hardness Scale Comparison Chart..................N34 Technical Guidance / Standard of Tapers ...............................................N35 References Dimensional Tolerances for Regularly Used Fits ........N36 Dimensional Tolerances and Fits ......................N38 Finished Surface Roughness ............................N39 N9