International Organization for Standardization (ISO)
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ISO 7176-13:1989
Scope
The test method consists in drawing a given block with definite speed over the test surface of in general rough structure. The bottom side of the block is covered with a layer of standard rubber to get comparable results.
ISO 7176-13:1989 history
1989ISO 7176-13:1989 Wheelchairs; part 13: determination of coefficient of friction of test surfaces