Maximicro: Using Maxim's Smart ADC to Compensate Sensors - Maxim   [Open results in new window]
... Use gravity as the physical input and you've got a scale. Turn it sideways and it's
an accelerometer. Mechanically connect it, and voilà, a strain gauge. ...
korea.maxim-ic.com/appnotes.cfm/an_pk/885 - 38k