Well then, what about those little sandpaper pads for pointing pencil leads or perhaps a drop bow compass when the little Timely templates were not yet available. My Ames lettering guide is a bit long in the tooth as well along with the old Leroy lettering system that had a sleeve for open ink wells instead of the Rapidograph style pens. I used all of these on diazo paper and linen media except early on when there was this oil based reprographic sytem.