<h4>How It Works</h4>

<p>Charts magnitude, direction and time of impact. Records 
continuously for up to 6 months. Shocks up to 50 times the
force of gravity (50g) can be identified immediately by 
examining the chart. Three mass-spring styluses work 
independently of each other, each measuring one axis- X, Y and Z. 
Each stylus operates by angular vibration with one degree of
 freedom in the direction it monitors. The mechanical , 
 friction-free linkage from each stylus’inertia mass 
 converts motion from any of the three directions 
 into the same plane and draws these forces onto 
 the chart paper for easy reading.</p>