Two 0.8-Foot HS Flumes with staff gauges and couplings to connect to detached stilling wells.  

Detaching the stilling well allows the operator to place the well where it is most convenient (within reason) for them.  Also, detaching the stilling well from the flume it also allows for the use of larger diameter stilling wells than otherwise could be easily accomodated on smaller flumes.  HS and small H Flume particularly benefit as their points of measurement are close to the inlet of the flume.