MTS Series 609 Alignment Fixture - Manual (Page 65)

Adjust the Angular Alignment
Series 609 Alignment Fixture Product Information Alignment Procedure 65
Round Specimens—Reduce the “C” Bend
If the magnitude of the middle gages’ readings change, you are overadjusting the
angularity screws.
Keep adjusting the screws to bring the readings closer together. Stop when your
readings start to move apart.
For example, if your original middle 180° reading goes from -15 to +15, you
have overadjusted.
Adjust
Strain readings
s (typical
t (typical
Try for zero
readings
Upper
Middle
Lower
Upper
Middle
Lower
Close to zero