A friend of mine has a nail gun (for construction). In the US these nails are labelled as 3"x 0,120" (76 x 3,05 mm). He just bought the same nail for the nail gun in the UK packaged as 75 x 3 mm. This just shows how items are rounded to the nearest inch and then converted to some odd metric number. When I get home I'll measure the nail to see what it really measures.
Mike Payne
