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Double-switch thermostat
An example of the element Mercury

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Double-switch thermostat.
This is a mercury tilt switch thermostat that contains two separate mercury tilt switches, one that tilts on when it gets too cold and one that tilts on when it gets too hot. This lets you set the heating and cooling systems to different temperatures.
Source: Chris Anderson
Contributor: Chris Anderson
Acquired: 13 January, 2010
Text Updated: 13 January, 2010
Price: Donated
Size: 7"
Purity: 99%
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