MTS Axial Extensometers - Manual (Page 29)

Configuration 29
.
14. While securely holding the attachment adapter, fully tighten the
socket head cap screws in that arm of the extensometer with a hex
wrench.
15. Repeat Step 13 and Step 14 to tighten the other attachment adapter.
16. Remove the alignment rod from the attachment adapter. Insert the
selected spring type (as determined by the shape of the specimen—
round or flat) in each attachment adapter.
Grasp the attachment
adapter with a small
adjustable wrench
when using the hex
wrench.
Attachment
Adapter
Hex Wrench