The ASTM D1005-95-2020 standard defines a method for measuring dry-film thickness of organic coatings using a micrometer. The standard applies to the measurement of free film and film thickness on laboratory test plates. The test method includes four procedures: Procedures A and C are used for coatings on flat rigid surfaces, and Procedures B and D are used for free films. The standard states that the deformability of the coating and the uniformity of the substrate affect the accuracy of the measurement and are not suitable for coatings that are easily deformed. Users need to follow SI units and pay attention to safety and regulatory requirements.