[arie]

if you are asking about the spacing dimensions then there are a couple of options here:

-get a hold of the mfg's hole spacing specs.

-with calipers, measure across two posts at the base plate, subtract one post diameter from your measurement and the result will be your center to center distance between one pair of posts. assuming of course that the post placement is equal throughout the tuner -and it really should be, you will now have your incremental hole spacing for all of the posts. don't go crazy about a couple of thou here or there due to manufacturing tolerances.

-if possible, take the tuner apart and use the baseplate as a marking guide for your drill point locations. from your picture, it looks like for certain you can take at least the posts off.

if you are asking about actually drilling the holes, i use a milling machine myself but any decent drill press with a vise or an angle plate will work fine provided you have marked your spots correctly. free handing is risky unless you are really good. you can also try one of those hardware store "drill stands" (for lack of a better word). making the holes perpendicular is pretty important.