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A referee whistle like no other! Designed specifically to encompass a flexible fingergrip.

Tuned lower to better match frequencies of widely used pea style metal whistles

Flexible integrated fingergrip for optimum comfort in cold arenas

Indestructible polycarbonate body


  • The Fox 40 Caul® has a traditional harmonized trill tone and clear
    loud sound

  • The Cushioned Mouth Grip (CMG®) provides soft contact area and reduces impact on teeth

  • Compact pealess design for flawless performance

  • Flexible fingergrip fits various hand
    sizes and reduces transfer of impact energy to the hand

  • No moving parts to freeze, jam or deteriorate

  • Flawless, consistent and reliable

  • The harder you blow, the louder the sound

  • Easy to blow and cannot be overblown

  • Will be heard above ambient noise

Models Available:

  • With Fingergrip

Design: 2-chamber pealess + CMG
Sound Power: 110 dB

The Caul® is named in honor of the late John McCauley,

regarded as one of the best referees in NHL history.

Words can not describe how humbled and proud we are as a family about this honourable milestone in my fathers legacy. Please accept our sincerest appreciation for making such a powerful impact in my fathers memory.
~ Blaine McCauley on behalf of the McCauley Family

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