Ocelot1 is an innovative mobile system for RTK measurement (real-time kinematics). It combines CCD sensors and GNSS for positioning in order to record and measure the digital image of the target in real time. Thanks to miniaturisation, the device is truly compact. The body, which is made of a die-cast magnesium alloy, and the rubber cover of the screw hole contribute to its durability and increase comfort when measuring outdoors.