Draper Labs has demonstrated a range of accelerometers of different g levels, up to 100,000 g for military applications. Due to the very stiff springs, the 100kg accel. also has wide bandwidth (240 kHz). For details, please contact Jim Sitomer or Jim Connelly at Draper. Jim Connelly (617) 258-4729 Jim Sitomer (617) 258-1752 I can be reached by email: jbernstein@draper.com Jon Bernstein