Michael Kellough said:Ajax, the saw depth adjusts in mm and will continue to do so after the metric scale is replaced with 1/16" markings. That is just wrong.
The solution you suggest does sound good to me. I have added marks for standard material thicknesses to my saws so if Festool changed the saws to such a dual scale I wouldn't complain.
Some of the tools don't have enough room to legibly host dual scales. For those Festool should supply both scales and instructions on how to switch.
The scale on the router is so relative (depends on the bit and how it is inserted into the collet) so the scale could be attached in such a way that it is easy to remove and replace.
Did not think about the indents not lining up, which is probably why the TS switch is described as being more difficult. For through cuts being a little 1/16" (or even 1/8") makes no difference. There probably are uses that require an exact depth.