Modular Instrumentation refers to a flexible approach in designing measurement and control systems. It involves using interchangeable components or modules that can be easily added, removed, or replaced. This modularity allows for customization based on specific needs, making it suitable for various applications in fields like engineering, science, and industrial automation. The primary advantage of modular instrumentation is its scalability. Users can start with a basic setup and expand it over time by integrating new modules as requirements change. This adaptability not only saves costs but also enhances efficiency, as systems can be tailored to meet evolving demands without complete overhauls.