Definition: Test Scroller - A device used to measure the movement or performance of a piece of software on various platforms, allowing for quick testing and feedback. It typically involves rotating a slider or button with a finger, which can be controlled by multiple users simultaneously to evaluate performance across different applications, configurations, or hardware requirements. Detailed definition: "Test Scroller" is a device used to measure the performance or movement of software applications on various platforms, allowing for quick testing and feedback. It typically involves rotating a slider or button with a finger, which can be controlled by multiple users simultaneously.