Lloyd research foundation inc offers rub proofness tester. The company manufactures a range of hi tech instruments for research and development. This rub proofness tester is specially designed for measuring the rub resistance of printed sample on paper, board, plastic and leather materials. It is provided with advanced 2 inch and 4 inch diameter specimen test beds, which rotate at the same angular speed. The relative velocity between all points on each disc is uniform. A high speed blower is provided to remove dismantled print or paper particles during the rubbing action. Some key features of this rub proofness tester are as follows: