An apparatus for determining the density of insulation in a cavity of a structure includes a sensor that is held in {HEAD ~ a substantially fixed position} relative to {TAIL ~ the insulation} for sensing the force of the insulation against the sensor 
An apparatus for determining the density of insulation in a cavity of a structure includes a sensor that is held in { HEAD ~ a substantially fixed position } relative to { TAIL ~ the insulation } for sensing the force of the insulation against the sensor
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH