Profile: RDM Test Equipment Ltd. is a supplier of quality control equipment. Our products include heat sealers, co-efficient of friction tester, rub tester, and tear tester. We also offer services like calibration printing, plastic testing, paper testing, rubber testing, packaging, and laminating. In our plastic testing, the co-efficient of friction tester is an extremely easy to use instrument, and has been manufactured to determine the static and kinetic friction of plastic film, sheeting, paper, and other sheeted material. The co-efficient of friction is a number which represents the friction between two surfaces.