\\ VTEH STAC; STKKS 



Mechanical excellence. Every part i* made of properly 



selectrd main-Mi I'mrK tim-hrd t., in MI re accuracy of operation. 



I .1 r\, Million |S aeCOIIIpll-hrii |,\ e\|ert 



\%orkm,-n in .1 t.i. t.,ry that has been producing precision m-n.i 

 menu for the past r\nit 



l\t -I mini it \ <>f //i'- nme parti. Only properly adapted clodm 

 .-.-.I in (.ml. \ registers. They ha\ 



-I iiii^s ami ilir rM-apement has jewelled bearings to insure 

 umt..iimi\ ..i rate. The time screws that drive the pencil 



i age are ma- Inn. d with great accuraex, tlm* injuring a 

 unit. Mm HiM\rmrnt ..| the pen< d ..\. i the record sheet 



Unlimited range of stage. I he record of stage is made 

 around tin e\ Under, the time record along its axis and the 

 \lin.l.-r revolves as the stage changes. There i* n<> limit to 

 id.- niunber of revolutions poil.le and hence to the range of 

 stage, while at the sanir inn. tin- m..\. m.-nt <( the jieiiril i 

 always in one direction, ulu. 1> assists material!) in intrrprrtm^ 

 the record. 



Portability. The light weight of these registers renders 

 thrni easily portable and hence adapts them to those special 

 !. \draulic investigations during which it i- necessary to make 

 frequent changes in thr |H>sitiun of the register. 



Type of record. The hydrograph or curve recording the 

 stage and time is continuous over seven days and presents 

 j;raphirally all of thr ilm tiMtion- <>t M.iur and tin -ir tim- r.-Li- 

 tions. These are shown at a glance by the curve, which is a 

 pi'-tiire record of conditions. This type of record has many 

 advantages and is especially useful in many situations. 



Simplicity of the record. The graph ir record is easily 

 interpreted and where I, may be <pnkl\ reduced to 



statistical l<im. 



Precision and convenience in changing record sheets. 

 The record sheets are cut to fit the cylinder eln*rl\ ami the 

 pencil carriage is adjustable, thus insuring an accurate setting 

 of thr tun. . The cylinder is securely locked in place while 

 changing the record sheet. 



The permanence of the setting of the register to the bench 

 mark. Thr -lot \\hirh extends through thr entire length of the 

 recording cylinder and thr two guards that prr\rnt thr jwrfor- 



