yea James, I come from a plastics manufacturing background, thats why I used the term "mil" or .001 of an inch...
I just went out and put a dial caliper on my cue....the butt is .841 and the OB-1 shaft is .849 at the collar. So it's 8mil over...times 2 since it's round

but thats about what I thought it was over.
Thou (unit of length)
From Wikipedia, the free encyclopedia
Jump to: navigation, search
A thou, also known as a mil, is a unit of length equal to 0.001 inches (a "milli-inch"). It is sometimes used in engineering and in the specification of:
the thickness of items such as paper, film, foil, wires, paint coatings, latex gloves, plastic sheeting, and fibers; and
manufacturing dimensions and tolerances.
The older name mil originated in the United States, with the alternate thou being used in Britain. As the metric system became more common in the States, use of the term mil began to decline among technical users due to the possible confusion with millimeters.[1][2] However, the mil is still in common use in the United States for the thickness of plastic sheeting or bags.
Gerry