The figure shows the complete setup of a venturi tube and a set of manometers and static taps to measure static pressure. Holes have been drilled into the walls of the venturi tube to measure the static pressure. The block diagrams below the venturi tube show the interchange of dynamic and static pressures all along the venturi tube. The conclusion drawn from this is that the static pressure decreases in the region of high-speed flow and increases in the region of low-speed flow.

Credits - NASA