Do you have a 45 degree diamond ruler that you love?
I bought one from Amazon that looked awesome! Even had holes drilled in it for marking the 'points' to stop sewing for set-in seams.
But alas...it arrived and it's in centimeters...
I debated about whether I could make centimeters work...but with all the rest of my tools in inches I decided it just wasn't going to work...so back it went....