  We present a cold atom gravimeter dedicated to field applications. Despite
the compactness of our gravimeter, we obtain performances (sensitivity 42
microGal/Hz^0.5, accuracy 25 microGal) close to the bestgravimeters. We report
gravity measurements in an elevator which led us to the determination of the
Earth's gravity gradient with a precision of 4 E. These measurements in a
non-laboratory environment demonstrate that our technology of gravimeter is
enough compact, reliable and robust for field applications. Finally, we report
gravity measurements in a moving elevator which open the way to absolute
gravity measurements in an aircraft or a boat.
