264, Nos.

4-7, p.

177.
3.

_Work systematically._ In case the same process is to be repeated on a number of parts, complete this process in all before taking up another process.

This is the principle of the division of labor applied to the individual workman.
In laying out duplicate or multiple parts, the proper cross measurements should be carefully laid out on one piece and then transferred with a try-square to the other parts laid accurately beside it.