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It's time to get medieval on physics! Build ten sleek and updated models of catapults and crossbows. These classic siege weapons from the middle ages also happen to be great tools for teaching physics, including lessons in force, energy, motion, and projectiles. A crossbow is a medieval type of weapon based on a bow and arrow, in which the bow is mounted horizontally on a stock. Build and experiment with five different types of crossbows. The projectile, called the bolt, has a safe foam tip and a special cross-section that prevents other projectiles from being launched. When the bolt is loaded into the crossbow, a rubber band is pulled backward and energy is stored in the stretched rubber band. A trigger releases the bolt and the rubber band launches it through the air toward its target. A catapult is another medieval ballistic device that uses mechanical rubber bands and counterweights to fling projectiles into the air. The 32-page, full-color manual has illustrated step-by-step instructions.
Shipping Rates
Standard shipping rates to destinations in the continental USA are as follows:
$0 - $25 $7.99
$25 - $50 $9.99
$50 + $12.99
Oversize or additional shipping charges may apply to some items due to their size and weight, regardless of the purchase amount. Customers will be advised shipping costs for orders going outside the continental USA for customer approval.
Shipping Methods
STANDARD SERVICE: All items ship from our Southampton, NY location within 1-2 business days. Orders with Standard service will be shipped via USPS First Class, USPS Priority Mail, UPS Ground, UPS Surepost, or FedEx Home Delivery.
EXPEDITED SERVICE: Please call us for a quote if you wish to have your items shipped using an expedited shipping service such as UPS Two Day or Next Day..
Estimated Delivery Times
We will provide an ESTIMATED delivery timeframe at checkout based on the items in your order and your location. Some orders may arrive in multiple shipments.
Delivery timeframes are not guaranteed by any carrier, so please place time-sensitive orders in advance.
Items Lost or Damaged in Transit
Please contact us by email or calling in the event your shipment is lost or damaged. In the event of visible damage, please keep all packaging material. Stevenson’s will provide tracking numbers for all shipments and is not responsible for items not received that the tracking shows as having been delivered.
PICK-UP
We offer pick-up at both our Southampton store and our East Hampton store. Please indicate at checkout where you would like to pick up your item(s) or call us at 631-283-2111.
International Orders
At this time we are unable to ship international orders.
