What are the uses of dummy pointer in universal testing machine?

In a Universal Testing Machine (UTM), dummy pointers serve several purposes, including facilitating the calibration of the machine by providing reference points for measurements. They help in ensuring accurate load application and displacement readings by compensating for potential errors in the testing setup. Additionally, dummy pointers can be used to simulate real materials or conditions during tests, allowing for more versatile testing scenariOS. Overall, they enhance the precision and reliability of test results.