Field meters are instruments used to measure various physical quantities in a specific area or environment. They can assess parameters such as electric fields, magnetic fields, temperature, and humidity. These devices are essential in fields like environmental science, engineering, and agriculture for monitoring conditions and ensuring safety. Typically portable, field meters provide real-time data, allowing users to make informed decisions based on the measurements. They come in various types, each designed for specific applications, such as geophysical surveys or electromagnetic field assessments. Accurate readings from field meters help in research, compliance, and optimizing processes.