Cranes. Measurement of wheel alignment Ingestion-build-71203 PD IEC TR 63139 is

PD IEC TR 63139 is a standard that serves technical specifications for mathematical addition of working voltages

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Cranes. Measurement of wheel alignment Ingestion-build-71203 PD IEC TR 63139 is1 Scope This International Standard establishes requirements for methods of measuring the alignment of crane wheels in accordance with ISO 4310, ISO 9373 and ISO 12488 1. The procedures given are based on the use of optical methods for measurement, however this International Standard permits the use of other methods which ensure at least an equivalent accuracy of measurements. This International Standard applies to measurements on four wheel cranes