[img]http://mw.concord.org/modeler1.3/mirror/mechanics/peaucellier.gif[/img]
[img]http://mw.concord.org/modeler1.3/mirror/mechanics/hoekens.gif[/img]
[img]http://mw.concord.org/modeler1.3/mirror/mechanics/chebyshev.gif[/img]
[img]http://mw.concord.org/modeler1.3/mirror/mechanics/watt.gif[/img]

http://mw.concord.org/modeler1.3/mirror/mechanics/peaucellier.html