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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.
Londons Clapham Common was the setting where, by all accurate accounts, Birmingham engineer Joseph Hudsons's invention could be heard over a mile.
Results ever since have been global sales to over 120 national forces of some 45 million original style Metropolitans.
Available with or without a chain for added style and safety.
Chain made of solid brass with a silvery finish.
Chain is 34.3 cm long, fitted with a button hook at one end and a ring for the attachment.
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