What is circular chart tape recorder?

A circular chart tape recorder is a device used to record and visualize data over time, typically in scientific or industrial applications. It combines a circular chart, which provides a continuous graphical representation of data, with a tape recording mechanism that captures audio or other signals. As the tape moves, a pen or marker traces the data onto the chart, allowing users to analyze trends and patterns in the recorded information. This type of recorder is often used for monitoring processes, such as temperature or pressure, in real-time.