PURPOSE: To obtain the subject jig useful in a field of biochemistry capable of simultaneously, readily and surely transferring strain by installing plural pins having almost same lengths protruding on the surface of a bottom part in a fixed arrangement.

CONSTITUTION: The objective jig 10 installs plural pins 18 having almost same lengths protruding on the surface of a bottom part 12 in a fixed arrangement. Besides, said pins 18 are, for instance, preferably installed in an arrangement according to a division of strain on a master plate to be used.