Eagle Tree has consistently lead the industry in affordable onboard telemetry. One of their newest is the Standalone G-Force sensor capable of collecting forces in three axis. Using a seven segment LED the readout provides the encoutered forces in tenth’s of G forces. The microsensors are fully compatible with their V3/V4 and On Screen Displays for real-time output. Two models are available: A three-axis for up to 8 G’s and one for up to 40 G’s.
http://www.eagletreesystems.com/Standalone/standalone.htm