Tilt switch from old thermostat, a sample of the element Mercury in the Periodic Table
Micro SMD tilt switch? - General Electronics - Arduino Forum
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Mercury switch - Wikipedia
KY-017 Mercury Tilt Switch Module - ArduinoModulesInfo
Thermostat with mercury switch - Stock Image - H130/0246 - Science Photo Library
Mercury Switch : Construction, Circuit, Working & Its Applications
IED training aid firing circuit mercury switch
Mercury Switch Module
Mercury switch - YouTube
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Tilt Switches Made From Bottles of Craft Beads : 4 Steps (with Pictures) - Instructables
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Mercury tilt switches
Mercury Switch PZ-212 - China Xurui Electronic Switch
Car Alarm Mercury Switch.
Mercury Switch 6″ Green - Grain Supply
Mercury switch - Wikipedia
Mercury tilt switches
