Anne - my sincere apologies for the conversion error

.........I have a very high tech. method of going from metric to imperial (or vice versa)..........I stick my thumb nail on the steel ruler at the metric point, and then simply turn the ruler over to read off the imperial, and usually works reliably. However, obviously I have made a mistake with this one. I am at work presently, but will re-measure this evening, and let you know the result.
P.S. I would not say that Anik gives the impression 'more often than not' that she is a blunt pencil - quite the opposite, I sense an intelligent and enquiring mind i.e. perhaps a 4H.