国立アメリカ歴史博物館のインスタグラム(amhistorymuseum) - 7月24日 22時17分

Time-O-Stat 8-Day Thermostat, 1932. The home owner could program thermostat to keep different temperatures during the day or night, and the clock switched between these temperatures for 8 days before it needed to be wound. The thermostat’s temperature could be set between 60-80.
Stay cool this weekend! #innovation #technology #history #coolness #ObjectProject

[BIHAKUEN]UVシールド(UVShield)

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