ACME Thunderer 660 Official Referee Whistle

J Hudson & amp; Co was founded in the 1870s in Birmingham by Joseph Hudson (1848-1930) and his brother James Hudson (1850-1889). The company become a manufacturer of whistles and continues as Acme Whistles. Acme is the world's largest and most famous producer of whistles.

Possibly the biggest selling whistle of all time, easy to blow, small, high pitch 117dBA and loud. Favoured by customers in colder settings where metal might stick to the skin; also chosen by officials in sports, teaching, animal training, police authorities, military units and music specialists.

* Loudness : 117 dB

* Material : ABS Resin

* Weight : 6 grams

* Measurement : 5 x 2 x 1.5 cm

* Country of manufacture : United Kingdom