the measure of earthquake preparedness
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Metal plastic or, wood ledge barriers prevent objects from sliding off the shelves. Picture frames, bulletin boards and mirrors will fall during an earthquake if they are not securely fastened to the wall. Do screw closed screw-eye to hang up picture frame/ bulletin boards/ mirrors.
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seismograph
seismographA seismograph, or seismometer, is an instrument used to detect and record earthquakes. Generally, it consists of a mass attached to a fixed base. During an earthquake, the base moves and the mass does not.
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