A popular paint testing method is the Pencil Hardness Test, which involves using pencils of varying hardness to mark a panel at a 45-degree angle until it is determined which pencil will not damage the coating.
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Zehntner ZHT 2093 Pocket Hardness TesterZehntner ZHT 2093 Pocket Hardness Tester with rubber guiding wheels at the testing head. Pocket testers for hardness tests on flat and curved surfaces.
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