Replica of Lightning Conductor by Benjamin Franklin, United States, 1730-1760 1730-1760 (original); 1931-1939 (replica)
Small stone scarab pierced longitudinally with flat base engraved with design of standing harpist and seated figure 2000-1000
Pendulum clock designed by Galileo in 1642 and made by his son in 1649, model. 1642-1649 (original); 1883 (model)