\\ ATKK STAC;K KI-XISTKKS in 



should be dated and otherwise marked for identification, and 

 the computation- -)i<>ul<l !< made at once. The computer sits 

 down at the adding machine with the record on the tapr 

 and with a rating table having the gage heights carried out to 

 hundredth-; then Iok^ up tin- gap- height (or each hour and 

 takes out the corresponding discharge on the machine. At tin- 

 ili.- .lax tin- t\%. -nix l-.iir tlischarges are total*. 1 Ml 

 these additions are made on letter -i/,- JMJMT. our *heei holding 

 id. . oiii|iiit.itinim Tor about twelve days, each column of fiV 

 H headed with tin- date. A sheet of carbon paper is reversed 

 nd the paper so that it can be reproduced by blue printing 

 when necessary. By this method, one month's record can be 

 totaled in about two hour-. 



The pencil rec< m graphic type registers should be 



ink.-. I in \\ith black drawing ink, using a fine pen. The inking 

 may be done on the bark of tin- -heet, thus preserving the |* 

 record in its original form, by placing the record on the glass 

 cover of a shallow frame which has an eleetrie lamp underneath. 



Notes or other information pertaining to the gage height 

 should be entered on the original sheet, as should .il-. the name 

 of the station, the date of the end of the record, and the gage 



lit scale. In some cases it may be advantageous to use a 

 i uhKer stamp for this data. 



For use with the graphic type registers a discharge scale 



for each station max be -n a celluloid triangle. A steel 



-i r. tight edge m. ix thru he clamped on a drawing board over 

 tli.- re,-.. rd in such a position that the triangle -liding along it 

 xsill always be in the proper position.* The hourlv discharges 

 are then read off by the use of the scale and are entered on an 

 appropriate ruled form. 



gee EnjriiHWlnjc N. -u- f-r Atunwt. 1014. pf* 408; atoo tor 

 I'.'M. imge 1490. 



