WATER-STAGE REGISTERS 



267 



The first type of register is designed to give printed records of 

 the rise and fall of water continuously for a long period of time, 

 and is especially adapted for stations where it is impracticable or 

 impossible, by reason of inaccessibility, for the observer to visit 

 the station for long intervals of time and where the record to be 



FIG. 147. Tape Reel for Use with Water Stage Printing Register. 



of service should be continuous. The records are given at inter- 

 vals of fifteen or thirty minutes. 



Fig. 146 shows an automatic water-stage register making a 

 printed record, and Fig. 147 shows a tape reel for handling and 

 examining the records. . A graphic recording register is shown in 

 Fig. 148. 



