dwarfgiant6143
dwarfgiant6143 t1_iybhyn7 wrote
Reply to My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on. by Iain_MS
I usually change those out when I can. They worked great for their time, but now people want them gone.
dwarfgiant6143 t1_iychnfx wrote
Reply to comment by Iain_MS in My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on. by Iain_MS
just the mercury. The thermostats were basically bulletproof otherwise.