1 Introduction; 1.1 Outline; 1.2 The notion of analog computing; 1.3 Direct and indirect analogies; 2 Mechanical analog computers; 2.1 Astrolabes; 2.2 The Antikythera mechanism; 2.3 Slide rules; 2.4 Planimeters; 2.5 Mechanical computing elements; 2.5.1 Function generation; 2.5.2…