Metropolitan police whistle

This was Acme's first ever whistle. Reports in The Times during the 1880's covered preliminary tests of a new cylinder shaped airfast whistle with no moving parts. London's Clapham Common was the setting where, by all accurate accounts, Birmingham engineer Joseph Hudsons's invention could be heard over a mile (1.6Km) distance. It could be held in the mouth leaving the hands free a clear advantage over the rattle that was used at the time.

Used by 120 national forces worldwide

Nickel plated steel
8 x 1.7 x 1.7cm

Presented in a printed card box
9.5 x 2.6 x 2.3cm