I am trying to measure the bending properties of spacer fabric.

However, the edge of the fabric doesn't hit the ground even passing after 100 mm.
I believe that contact distance and contact length should be over 100 mm. 
Please refer to the image below:

Do you recommend using maximum measurements (100 mm) for both contact distance and contact length in this case?
Are there any instructions or tips to get accurate measurements with the bending test device?

I look forward to hearing from you.
Thank you.

Uikyung Jung