Optical Center Punches

Alan,
I haven't used a "bombsight". I was referring to a layout tool. It
has an optical "sight" and a carbide tipped center punch. You sight in
the scribe lines on the part with the optical peice, then swap out with
the punch and make your indentation dead nuts on the intersection of the
scibed lines.
I use x-acto knives to do my layout work on aluminum which makes a
pretty fine line. When you look at it under the optical punch however
it looks like the grand canyon!
I believe it's the best thing going for traditional dye layouts.

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