76.8 x 63.1 x 25.3 Carved wood and brass
Interpotent lever to illustrate the system of oblique forces
76.8 x 63.1 x 25.3 Carved wood and brass
Musschenbroeck, Peter van, Introductio ad Philosophiam Naturalem, Leiden, 1672, § 432, Tab. VI, Fig. 2. 