The UltraTec PD1v flat is a small, lightweight, high sensitivity, specialist pocket Doppler. Its flat vascular probes are ideal for taping in position for long term monitoring or for use by a vascular specialist for routine vascular examinations. Vascular flow signals are easily located using the narrow beam high sensitivity flat probe while internal signal processing minimises the noise artefacts. The flow signal is available to the user via the built in loudspeaker or optional headset with output level controlled by rotary volume control. A chart recorder output is provided for the printing of non-directional waveforms.