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The First Book of Machines, first published in 1962, is a timeless work that explains the history of machines up to modern devices that assist mankind do its work. While we think of modern technology as being greatly different from what our forbears had at their disposal, Walter Buehr demonstrates that all machinery is based on six simple machines: the inclined plane, the wedge, the lever, the wheel and axle, the screw, and the pulley. Some machines are combined to become complex machines. Buehr discusses manufacturing and how some machines are used to make other machines. He delineates machines that are used in daily life as well as a breakdown of other uses, such as those used in construction, farming, transportation, household, office and business. He introduces the concept of automation and computers, although that world of technology has seen astounding development in the half century since the book was originally written. The book is illustrated throughout with pictures by the author. Although intended for an elementary audience, the material contained in The First Book of Machines is accurate and informative, and may inspire young readers with an interest in engineering.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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