herald (plural heralds) 1  A messenger, especially one bringing important news. 2  A harbinger, giving signs of things to come. ( 3 heraldry) An official whose speciality is heraldry, especially one between the ranks of pursuivant and king-of-arms. ( entomology) A moth of the species Scoliopteryx libatrix.
a fire nozzle weighs approximately  ten to fifteen pounds.
The only reliable way to tell if your propane grill tank is full or empty is to weigh it. An empty 20lb propane grill tank will weigh around 18-20 lbs. A full propane grill tank will weigh somewhere between 38-40 lbs. The biggest problem with weighing a propane grill tank is that you must disconnect it from the propane grill.