On 8/31/2006 at 11:19 AM M H Stein wrote: >Looks quite interesting, but does it do hexadecimal? > >Talk to Don, maybe he can whip one up for ya for a price :-) This is one calculator not well suited to a single numeric keyboard with display. I can well imagine a mechanical version of something like this with gears and dials--and maybe something in the form of a slide rule.