Frank Sprague thermostat invention
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2:37
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nice! All-mechanical solutions I find fascinating - ingenuity without electronics was so well perfected back then; this came out at the time the gasoline automobile was being perfected - the golden age of simple, elegant machines.
chuckkottke 4 years ago
that thing is cool
mylesgifford123 4 years ago
ok. but can it dispense beer?
abstractadobo 4 years ago