Just make a note that all numbers are the same as the setting preference. I don't know about Bob but I can usually remember if I want to work in inches or mm. FWIW, I do prefer metric for width and SEL but need to think in imperial when it comes to length. I use a metric tape but when checking to see if a board is roughly long enough I'll use a combination tape. My Incra table saw fence measures 1/32 but I have it zeroed on one of the tapes to read mm. The measurement will not be 100% accurate when it locks a .0312 instead of .0393 but I can live with that error. I would have purchased the metric version but most flat work plans I have are in fractions.