A Lidar measurement device for vehicular traffic surveillance and method for use of same are disclosed. Also, the step driving profile is determined by parameters such as the accelerations and speeds of reticle and wafer stages, the time taken until synchronous scan driving starts after step driving, and the time taken until exposure starts after the start of synchronous scan driving. A controller determines from the temperature measurements a change in temperature that exceeds a threshold and determines therefrom level of a liquid in the wellbore. Each of the plurality of flat tubes can be positioned to direct the refrigerant from the inlet manifold to the outlet manifold in a second direction, the second direction being substantially opposite the first direction. The content addressable memory is also searched with the modified comparand. The measurement resistance is connected through the selected switching resistance to a supply voltage whereby a voltage drop dependent on the switch position is across the measurement resistance.