The present disclosure provides a device for measuring jugular venous pressure of a patient. The device comprises a body defining a longitudinal enclosure and having a window along a length of the longitudinal enclosure to allow light to exit the longitudinal enclosure, and a beam generator comprising an array of light emitters. The beam generator is configured to direct light out the window to generate a beam of light along a plane perpendicular to a longitudinal direction and at an adjustable position along the longitudinal direction. The device has an adjustment mechanism for adjusting the position of the beam of light relative to the body along the longitudinal direction, and a readout indicating the position of the beam of light along the longitudinal direction.
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