Meccano is a construction toy system that consists of metal strips, plates, gears, and various other components that can be assembled to create models and machines. Invented in 1898 by Frank Hornby, it allows users to build structures and vehicles using nuts, bolts, and screws, promoting creativity and engineering skills. The sets come in different sizes and complexity levels, making them suitable for children and adults alike. Over the years, Meccano has evolved to include plastic parts and electronic components, enhancing the building experience. It remains a popular educational tool for teaching principles of mechanics and design.