Millling machine question

[carp]

Been thinking of going to look at some mills this weekend, i struggle with hole drilling accuracy on the drill press, my question is if i wanted to make say a motor mount out of aluminium i need to put 4 mounting holes in 50mm apart, would i be able to clamp my piece of aluminium to the mill then move it using the handles to drill the 4 holes exactly 50mm apart? sorry if this seems a little basic.