A sequence of illustrated lectures teaches elementary mechanics through hands-on experiments and modular apparatus, emphasizing observable demonstrations suitable for students and artisans. The text develops fundamental concepts including the definition, composition and resolution of forces, friction, gravity, centres of gravity and oscillation, and explores applications to pulleys, pulley-blocks, levers, inclined planes, screws, wheels and axles, beams, timber strength, frameworks, bridges, and pendular motion. Each lecture pairs experimental methods and measurements with practical commentary to make theoretical principles intelligible and directly applicable to common machines and structural problems.