SAE J1305
SAE J1305 1987-JUN-01 Two-Block Warnng and Lmt Systems n Lftng Crane Servce
This SAE Recommended Practice applies to cranes in lifting crane service which are equipped with two-block warning and/or limit systems.
Purpose—The purpose of this SAE Recommended Practice is to establish the minimum performance requirements of devices which signal and/or automatically prevent two-blocking.
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