1.1 This specification covers zinc and zinc alloy jumbo, block, and half block ingot meeting dimensional requirements. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parenthe This specification covers zinc and zinc alloy jumbo and block ingots meeting dimensional requirements. Zinc jumbo and block ingot specifications shall include dimension definition and limits in dimension. Jumbo or block ingots, or both, shall be reason