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    Eisco Garage Physics Large Trebuchet DIY Kit - 21 inch Beam Arm, made in U.S.A.

    • Item No : 273232454896
    • Condition : Brand New
    • Brand : Eisco
    • Seller : hbarsci
    • Current Bid : US $79.99

    • * Item Description

    • With a simple counterweight, beam arm, and sling, heavier projectiles can be launched much further than is possible with other siege engines. Think of it as a machine which transforms gravitational potential energy into kinetic energy.
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