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|SUTHERLAND RUB TEST
The tester is a motor driven instrument for moving a weighted test strip over a printed specimen through an arc. This test instrument is used in various ways to expose paper surfaces to a rubbing action and test its resistance to damage. Some tests are run dry, while others are run wet or with moistening of the surfaces. Some tests are run with the test material rubbed against itself, while others rub the surface with some other material.