My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on. Submitted by Iain_MS t3_z84a06 on November 29, 2022 at 7:58 PM in mildlyinteresting 91 comments 197
Gambit3le t1_iy9wwat wrote on November 29, 2022 at 9:00 PM Mine is the same. It works well with my oil fired steam boiler. Permalink 2
My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on.
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