CURRENT METERS 



47 



\H \s| KKMI.M" HCiiM 



Oiv i- 



tally bridges may be found well located as regards 

 stream gaging. In such cases it i customary to mark off 

 measuring points with paint on the rail or string piece of the 



ije. Tin initi.il point of the series should be carefully 

 referred to a pennan nt *lji*ct and a carrful <lrrription of the 

 \Miitm in tin- note-book. 



A staylim* in usually stretched above the bridge to be used 

 \sli.-n high velocities prevail. Measurements from bridges are 



m.nlr a- I'MMII 



Fio. 24. Tjrplcol Gaftnf Station for Hrldfe 



