Mechanisms and Mechanical Devices Sourcebook

Customer Service and Shipping
Amazon.com provides excellent customer service and a wide range of shipping options to both U.S. and worldwide customers.

Credit Card Security and Privacy
Amazon.com offers customers a safe option for Internet purchases: The Netscape Secure Commerce Server, which encrypts any information a customers types in. If customers prefer not to submit their payment on the Internet, they can phone or fax their credit card number to us, or pay by check.

Returns Policy

Our returns policy is simple.

Within 30 days of receipt of your order, you may return any of the following items for a full refund:

any book in its original condition, or any book we recommended and you didn't enjoy (regardless of the condition)
any unopened media (music CD, cassette tape, vinyl record, DVD, VHS tape, video game, or software)
and any other merchandise that's in new condition, including original packaging and accessories

Please note that we can process returns and refunds only for items purchased from Amazon.com.

You can also cancel unshipped items.

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