>It's been a long day, I'm going home. Swap accuracy & precision throughout the final paragraph, it makes sense then
>
>>P.S. George - my client can be very fussy, I have had discussions regarding the lack of accuracy in my figures & them want me to convert all of my calculations to be accurate to 3 dp. What we're talking about is 1/5th teaspoon of liquid in 200000 litres, when their precision of measurement is +/- 20 litres.

OK, I will.:-)

Just one note. If you're concerned enough about this, you might want to submit a bug report at the MS site. Feel free to add my little thing with TRANSFORM(). As I said, I don't know where this is coming from, but I really don't think it's a problem that would persist in calculating variables. Still, recall that the Win 3.1 Calculator had a bug that first cropped up in Win 2.x and wasn't fixed until Win95.(And yes, it was a rounding problem):-)