International Organization for Standardization (ISO)
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ISO 9248:1992
Scope
Specifies basic units, symbols and tolerances for the measurements of general machine dimensions, performance and capacities of earth-moving machinery as defined in ISO 6165. It does not cover methods and instrumentation to be used.
ISO 9248:1992 history
1992ISO 9248:1992 Earth-moving machinery; units for dimensions, performance and capacities, and their measurement accuracies