Civil Engineering Reference
In-Depth Information
Fig. 8.15 Co-ordinate drilling charts for 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12 hole centres.
It is also useful to pitch out 24 holes into a chuck backplate for dividing in the lathe.
Fig. 8.16. This chuck backplate has been drilled in 24 places to allow dividing on
the lathe.
