Accelerometer
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An accelerometer is a device that measures the proper acceleration of an object. Proper acceleration is the acceleration of the object relative to an observer who is in free fall. Proper acceleration
A typical accelerometer
Tri-axis Digital Accelerometer by Kionix, inside Motorola Xoom
Inertial measurement unit
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An inertial measurement unit is an electronic device that measures and reports a body's specific force, angular rate, and sometimes the orientation of the body, using a combination of accelerometers,
Accelerometer
…Inclinometer Inertial measurement unit Inertial navigation system…
Apollo Inertial Measurement Unit
Inertial navigation unit of French IRBM S3
Modern inertial measurement unit for spacecraft
9-DoF IMU SiP breakout board