Coghlans Four Function Whistle

Tax included. Shipping calculated at checkout.



Tac Source ships from various warehouses throughout Australia. Allow 5-10 business days for delivery from time of order placement.

Holidays are not considered business days and will cause additional delays. Tactical Source makes every effort to deliver your order in a timely manner. Delivery times are not guaranteed. High order volumes and transit delays with carriers can cause delayed deliveries.

Once your order ships, you will receive a shipping confirmation email with a tracking number. For more information, please email

DON'T DELAY SHIPPING! To ensure your order isn't delayed please check the following prior to confirming your order:

- Double check your address
- Ensure the postcode matches the suburb you live in.

We will always get your order out to you as soon as possible!


*Based on Aust Post suggested delivery times

Size Guides

View our size charts below which are to be used as a guide. Please feel free to contact one of our friendly staff if you have any questions regarding sizing. 

TacSource Size Chart

5.11 Tactical Size Chart

5.11 Bag & Backpack Size Chart

CVRT Tactical Size Chart

Mechanix Wear Size Chart

Merrell Tactical Boots Size Chart

Portwest Size Chart

Ironclad Gloves Size Chart

Under Armour Size Chart

Helikon Tex Size Chart

Magnum Boots Size Chart



Phone: 02 6516 0008

Coghlan's Four Function Whistle is a useful and simple multipurpose tool when adventuring outside. Combining the essentials for navigation and signaling, this compact tool is handy to bring along wherever you go. The Four Function Whistle includes a thermometer, magnifier, compass, and whistle. With this tool, you can alert others of your presence thanks to the loud whistle. Looking to find your way? Use the compass and the magnifier to read maps and orient yourself. The handy thermometer provides accurate readings in Celcius and Fahrenheit.

  • Compass is ideal for reading a map or orienteering
  • Whistle is loud enough to alert others of your presence
  • Thermometer accurately tells the temperature in both °F and °C
  • Magnifier is useful for reading maps or viewing details on items
  • Easily attaches to a zipper for quick and easy access