A cubit is a unit of measurement equal to about 46 centimeters. A span is a unit of measurement equal to about 23 centimeters. AT: "about 3 meters" (See: [[rc://en/ta/man/translate/translate-bdistance]])
A "coat of chainmail" is a flexible piece of body armor covered with protective scales or small plates. This can be stated in active form. AT: "he protected himself by wearing a coat of chainmail" or "he wore a coat of chainmail" (See: [[rc://en/ta/man/translate/figs-activepassive]])