the outlet 45 stated another way second end 43 is defined at the portion of outlet transition segment 40 which is distal the tubular deflector housing 35 and attaches to outlet 45 outlet 45 is an elongate hollow member that provides an outgoing conduit for the air velocity indicator and control device 10 like inlet 25 the particular size shape and configuration of inlet 45 corresponds to the particular component it interfaces with within the pneumatic distribution system 5 for example in implementations having the air velocity indicator and control device 10 mounted between air cart air lines 7 and headers 8 such as those seen in fig1 3 the outlet 45 is round in cross section and sized and configured to suitably couple to a 2 5 inch or other header by a conventional mechanical coupler the airflow velocity and thus the velocity of the entrained product within the pneumatic distribution system 5 e g between the air cart air line 7 and header 8 as seen in fig1 3 is determined by way of an indicator assembly 100 indictor assembly 100 includes a deflection plate assembly 110 a and a gauge assembly 125 deflection plate assembly 110 a includes a deflectable plate 111 pivotably housed between the inwardly facing surfaces of tubular deflector housing sidewalls 37 namely within a void space 39 referring now to fig3 deflectable plate 111 is a planar damper type structure that defines a width dimension.