What are the commonly used units for anodizing coating thickness?

Example

Inches 0.001"

Mils   1.0 mil

Microns 25.4 μ

0.001" is read as one thousandth of an inch

0.0001 is read as one ten thousandth of an inch

1.0 mil is also read as one thousandth of an inch

0.1 mil is one ten thousandth of an inch

25.4 μ is read as 25.4 microns

Equivalents:

0.001" = 1.0 mil = 25.4 μ

For a Class I coating of 0.7 mil the equivalents would be:

0.7 mil = 0.0007" = 17.78 microns