> SONY accelerometers

Sorry, but those are not accelerometers, they are gyrometers, more
exactly, gyration rate change sensors ((delta - angle)/(delta - time)).
They can't be used as accelerometers normally, but the CAN be used to
control something that pivots about an axe (such as a pendular device -
Morgan is your thing pendular ?). They can also be used in an inertial
reference system for a rotary device or inertial compass (gyro compass).
They suppress the unwanted axes pretty well so no shortcuts there.

They are nice to play with, however ;) I also happen to have a lot of
these around, good and bad, also from/for camera image stabilizers, but
I'm not selling.

FYI the devices you have correspond to the gyrostars by Murata and there
is a data sheet and a preamplifier schematic on their web site.

hope this helps,

Peter