PoliceWhistleFlow.jpg

HOW A WHISTLE WORKS

Whistles are simple but powerful. Here's how they work

48a99f3d0d001e97b56f8e9473ee4bda.jpg

HISTORY OF WHISTLES

Whistles have been around a long time. Here's some of the history.

Arm yourself with a whistle.jpg

USES OF WHISTLES

Whistle can be for many purposes. Here are some ways they are used.