Thunderer Whistle

Way back in the 1860s, Joseph Hudson, who was a Birmingham trained toolmaker, converted his humble washroom at St. Marks Square into a workshop. Here he did anything he could to supplement the family income from watch repairing to cobbling shoes. Today Acme whistles are recognized as some of the finest whistles manufactured in the world.
 
This is the official referee whistle used by F.I.F.A., or the Olympics and many other world class leagues.