Tennis String Tension Sensors

Hi All,

I am new to this forum. I would like to build something that can measure the dynamic tension of tennis strings once strung on a tennis racquet. I was hoping that someone could help steer me in the direction of the correct type of sensors to achieve this. A similar device can be seen here:

https://www.topserve.com.au/productDetail/Sensors-Gadgets/Item/ERT-300/21200

Thanks
Nick