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Tabitha Babbitt

Код 1350201

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Аннотация к книге "Tabitha Babbitt"

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Tabitha Babbitt (1784–1853) was an early American tool maker who is credited with inventing the first circular saw used in a saw mill in 1813. She was a member of the Shaker community in Harvard, Massachusetts. She was watching men use the difficult two-man pit saw when she noticed that half of their motion was wasted. The first circular saw she made is in Albany, New...

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Издательство: Книга по требованию
Дата выхода: июль 2011
ISBN: 978-6-1345-0967-1
Объём: 68 страниц
Масса: 123 г
Размеры(высота, ширина, толщина), см: 23 x 16 x 1

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