Extech-CG205-Coating-Thickness-Tester-&-Calibration-Film-EXTECH-CG204-p-The-Extech-CG204-coating-thickness-tester-uses-dual-technology-to-provide-automatic-recognition-for-ferrous-&-non-ferrous-substrates-Its-internal-memory-stores-400-readings-80-direct-&-320-group-which-can-be-transferred-to-a-PC-via-USB (Universal Serial Bus)-for-use-with-the-supplied-software-Supplied-with-2-x-AAA-batteries-USB (Universal Serial Bus)-cable-software-calibration-iron-calibration-aluminium-precision-standards-&-pouch-case-p-Extech-CG