Mechanical Butterfly - Da Vinci Kit

Mechanical Butterfly - Da Vinci Kit

1754
$19.95

Description

It is extremely difficult to create a mechanical replica of the natural movement of an animal. The beating of the dragonfly's four wings is particularly complex and Da Vinci was well aware of how difficult it would be to create this machine; he himself described it in great detail. It is not simply wings beating up and down; it's a jointed motion. While beating down, the wings are "flat" in order to push as much air as possible, whereas when they are raised, they are angled so they create less resistance.

For ages 8 and up.

WARNING CHOKING HAZARD- Small parts Not for Children under 3 yrs

Shipping and Returns

Most in-stock orders are shipped within 48 hours of placement. Shipping methods vary depending on customer location and specifications. Credit card orders will be billed when order is processed. Partial orders will be charged upon shipment.

If you are not completely satisfied with your purchase, simply return the clean item within 14 days of receipt. We will replace the item, refund or credit your account the full purchase price of the product.
Note: Shipping and handling charges are not refundable. Autographed items are not refundable.

Return Address:
George Bush Library and Museum Store
ATTN: Return Department
1000 George Bush Drive W
College Station, Texas 77845