国立アメリカ歴史博物館のインスタグラム(amhistorymuseum) - 6月16日 10時06分

This Lincoln Milling Machine (1861) was manufactured by tool builder George S. Lincoln of Hartford's Phoenix Iron Works and was used in nearly every factory in Hartford, #Connecticut. Its high-speed rotary cutting blade shaved excess material from a metal workpiece.
Hartford is one of the #PlacesOfInvention on our map of innovation. What was invented in your hometown? Add it to the map: invention.si.edu (link in profile) #Innovation #manufacturing #history

[BIHAKUEN]UVシールド(UVShield)

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