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Sundial cannons were guns that were used to signal noon. Essentially, an early form of alarm clock. : r/ForgottenWeapons
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Morease Wireless Bluetooth Speaker Small Mini Alarm Clock Portable Cannon Mini Voice Broadcast the Card Instert Vehicular Audio System - Walmart.com
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Antique Pin Fire Cannon & Animal Trap Gun Door Alarm | Guns & Military Artifacts | Online Auctions | Proxibid
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A10 Wireless Bluetooth Speaker Small Steel Cannon Lock And Load Spray Mobile Phone Portable Card Mini Speaker Alarm Device | Fruugo UK
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Gotha, Germany. 11th Feb, 2019. An alarm cannon from the year 1800 stands in the inner courtyard of Friedenstein Castle, recorded on the day of the annual press conference of the Foundation
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S41 Bedside Cube Wooden Clock Version Wooden Bluetooth Speaker Alarm Clock Sound Retro Shock Sound Cannon-Yellow on OnBuy
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French Depose Alarm Cannon | Cowan's Auction House: The Midwest's Most Trusted Auction House / Antiques / Fine Art / Art Appraisals
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Qianli Wireless Bluetooth Speaker Small Mini Alarm Clock Portable Cannon Mini Voice Broadcast The Card Instert Vehicular Audio System pink | Walmart Canada
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KAIXIN Clocks Portable Home Desktop Wireless Bluetooth Speaker Mobile Computer Outdoor Cannon Household Radio Receiver Mini Alarm Clock : Amazon.co.uk: Electronics & Photo
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