10 



A. DA1GGER & COMPANY, CHICAGO, U. S. A. 



1077 



107(5 



1078 



1076 VISCOSIMETER, Engler's. Latest improved 



form with double walls. 

 Gold plated inside, with platinum outlet. Furnished 

 with a graduated flask, ring burner, and two fine 

 thermometers $65.00 



1077 VISCOSIMETER, ASPHALT. "New York Testing Laboratory Type." 



Consisting of an aluminum float, with three brass 

 plugs, standardized 8.00 



1078 CUBICAL BRASS MOULD. One-half inch, with brass plate, for melting . 



point apparatus 5.00 



179 DRYING OVEN. "New York Testing 

 Laboratory Type." For uniform tem- 

 peratures. This oven has a fan mounted 

 on ball bearings which can be revolved 

 by any convenient power, thereby 

 hastening the drying. The heat is gen- 

 erated from a ten-inch rmg burner below 

 the oven, the outside is covered with 

 asbestos, made of Russian iron $25.00 



1079a DRYING OVEN. Same as No. 1079, 



but made of copper 35.00 



1080 BITUMEN HOLDER. Draper Type.. 3.00 



1080 



1081 



1081 DULIN ROTAREX, de- 

 signed for the determination 

 of Mineral Aggregate in 

 Bituminous pavements. A 

 complete extraction can be 

 made in five minutes, which 

 would require two hours by 

 the filtering methods. With 

 a specially constructed elec- 

 tric motor, which can be 

 operated on either alternat- 

 ing or direct current, 110 

 volts (unless 25 cycles or 

 less), including 5 feet of lamp 

 cord with plug for attaching 

 to Edison lamp socket. Net. $70.00 



(Descriptive circular upon 

 application.) 



