Whistle Silver model 2

Description

Silver whistle

Model 2

A whistle is an instrument which produces sound from a stream of gas, most commonly air. It may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organ.Whistle manly used for the traffic police, security guards and vehicle dispatching management, etc