News flash...your cell phone employs a modern accelerometer...ditto personal pedometers, etc use solid state accelerometer chips
Old, old, old pendulum types were the best of it's time, but that time has come and gone...
On my windgenerator (am good up to 350KW) brake design (48" dia cast iron disc brake), found that hydraulic pressure sensors leaked too often, but that was the required spec
Moved to our industrial hydraulic sensors used in our steel rolling mill controls and found that they also leaked over time