The International Organization for Standardization (ISO) is a worldwide federation of national standards bodies. This organization has produced a standard "ISO 484" that defines the manufacturing tolerances for marine propellers.

Prop Scan technicians use the International Standard 484 to inspect your propeller. ISO compliance gives you quality workmanship and peace of mind. 

The ISO - 484 standards describe four accuracy categories

Class I and Class S where traditionally only used on special vessels.

Prop Scan has made those classes available to everyone, this means everyone's propeller problems can be economically resolved.

PROP SCAN ENHANCEMENTS
Due to Prop Scan's high levels of accuracy and repeatability it is now possible to repair a propeller to an accuracy level that is twice the accuracy of  Class S. 
We call this Class O.

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