Someone referred to EG&G inc's accelerometers. These are excellent products BUT they also sell a vast treasure trove of technical products - If you are at all interested in anything technical this site is well worth a look. I've included just the A, E and R portions of their index below as an example. I seldom multi-post but technophiles of any persuasion are liable to find this site a treat. Probably a bit out of the amateur league in many cases but some material will be useful. I have no association with EG&G at all - I just wished I owned the company :-) Index page is at http://www.egginc.com/egg/prodfram.htm/all/EGG And home page is http://www.egginc.com Russell McMahon _____________________________ >From another world - www.easttimor.com What can one technophile * do? Help the hungry at no cost to yourself! at http://www.thehungersite.com/ (* - or woman, child or internet enabled intelligent entity :-)) A A.P.U. Enclosures (Aircraft) AC Impedance Systems ALPHA-Cú Seal ARTHUR multi-wavelength fluoroimager ARTHUR multi-wavelength fluoroimager ASW Research, Analysis, Systems Evaluation ATD 400 Automated Thermal Desorber Accelerometers Access Control Systems, Integrated: Accessory Mounting Couplings Acoustic Aircraft Engine Exhaust Systems Acoustics Engineering Acoustics, Underwater Theory, Design and Testing Acquisition Management Assistance Acquisition of Products, Services and Systems Adapters - Cable Advanced Testing and Diagnostics Airborne Survey/Airborne Lidar Topographic/Terrain Mapping Alpha Spectrometers Alpha Spectroscopy Amplifiers Analog-to-Digital Converters Analytical Laboratory Operations Antennas Arrays, Photodiode Assemblies and Sub-Assemblies, Welded and/or Riveted Asset Management Services Astrophysics' Products Page AutoDELFIA automatic immunoassay system AutoDELFIA automatic immunoassay system AutoSystem XL GC Automatic Transmission Fluid Testing Automotive Component Testing Automotive Emissions Testing Automotive Fuels & Lubricants Testing Automotive Testing E-Sealú EG&G Portable Cable Analyzer ERCO Stretch-Formed Aluminum and Titanium Skins Electric Field Sensors Electrochemical Analyzers Electrochemical Impedance Measurement System Electrochemical Instrumentation Electromagnetic Pulse (EMP) Simulators Electromagnetic Pulse (EMP) Testing Electromagnetic Radiation/EMI/EMC/EMV/HERO Electronic Publishing Electronic Safe & Arm Devices Electronic Systems Development Enclosures, A.P.V., Aircraft, Exhaust Energetic Material Processing Energy Resource Exploration Engineering, Experimental Engineering, General Facilities Enterprise Network Solutions Environmental Engineering Support Services Environmental Engineering Environmental Monitoring Systems Environmental Monitoring Environmental Monitoring Environmental Monitoring Exhaust, Aircraft Experimental Test Hardware Engineering, Design, Fabrication Exploding Foil Initiators (EFI) RSL2100 Miniature Xenon Light Source Radar Engineering Radar Measurement Systems Radar Systems Development Radon Monitoring Equipment Radon Monitoring Equipment Rain Gauge, Self Reporting Ratemeters Real Estate/Operating Businesses Records Management Reflectors, Coldshields and Optics Remote Monitoring Systems Research Applications Rigid Joint Rocket Bands and Sheet Metal Formed Rocket Engine Components Rolling Airframe Missile (RAM) Support Rubidium Frequency Standards (RFS)