Micrometre, also called micron, metric unit of measure for length equal to 0.001 mm, or about 0.000039 inch. Its symbol is μm.

As you can see from my picture that's a lot more than a micron. If the chip had painted inserts like the Park Place and Showboat 100.00 chips do, then, yea it's a micron.

Like I said, Inserts go thru the mold of the chip and for the record that's a lot more than 0.000039 inches. That's with 4 zero and 39