Model making constantly requires drilling holes that are perpendicular to the work piece’s plane. To bore at right angles by eyesight doesn’t sound too difficult, but one has to observe two right angles at the same time and that tends to be a tad difficult with just two eyes.
Salvation comes in the shape of a drill press, or for those to be short a bob or two, a drill stand which guides the power drill. Alas, most of the latter don’t have a boring table, so bigger work pieces tend to wobble and one can’t fixate them either. And just maybe one would like to use a gauge or stop in order to facilitate repeated drilling?