3M 18470, Scotch-Brite Roloc Coating Removal Disc, CR-DR, SiC Extra Coarse, TR, 4 in, 7100021755, 40 per case 
Insize ISO-8000FN, COATING THICKNESS GAGE(HIGH PERCISION), 0~19.6mils/0~59.0mils, 6974029771361
$1,571.17
Resolution .01mils
Can measure thickness of thin costing below .4mils
High repeatability
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$11.24
System Components
3M Scotchkote Liquid Epoxy Coating Spray System HSS Mix Nozzle, RightAngle, 7000058900
$168.76
Measuring/ Inspection Instruments
Insize 9501-1200, COATING THICKNESS GAGE, probe type Fe, 0~50mils, 6928640394355
$626.91
Measuring/ Inspection Instruments
Insize ISO-1000FN, COATING THICKNESS GAGE(BASIC TYPE), 0~78.5mil, 6974029772924
$409.53