As you may know, Electronics Inc. has provided premium grade Almen strips for many years. In addition to testing the SAE required parameters of length, width, thickness, hardness and pre-bow (flatness) we also do performance testing. The following link will show you the distribution of arc heights for a common setup. You should expect to get similar results when you perform your own tests. Please let me know of your results.
http://www.electronics-inc.com/uploads/StripTesting.pdf
