..would it not be simpler, and it seems to work, using x as its original position inputting x+95...

Absolutely. My experiment was just to test the math-formula and show how to enter feet/inches with a cheat. Come to think of it, the easiest would be if everyone used metric [:)]

..conversion bug in the parsing algorithm and this happens as soon as the unit is not the centimeter...

Oh well, I guess the math function may have to wait one release in the non-metric world. ok