SCIE 



O-Ift of 



Hew Sebibs 

 You L, N«. 1304 



Friday, Decembee 26, 1919 



AminAL SCBScHipnoN, 85.00 

 After January 1, 1920, $6.00 



ROTARY HIGH VACUUM PUMPS 





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The Gramercy Rotary High Vacuum Pump 



. T^he Gramercy Rotary High Vacuum Pumps fill a long felt want for a rotary vacuum pump which 

 13 built for hard, steady continuous work. 



Features of the Gramercy Rotary High Vacuum Pump: 



1. Unusually high vacuums obtainable — 0.00001 mm 



2. Very small expenditure of power. 



3. Requires no attention when in operation. 



4 Small and compact — largest size 16 in. x I8I/2 in. x 19 in. Wt. 175 lbs. 



5. Mechanically indestructible. 



6. If the vacuum is broken the pump is in no wise endangered. 



7. Exceptionally high capacity — 5 cu. ft, per minute. 



mend 



3rd Ave., ISth— 19th St. 



185 I mmsm 

 PITTSBURGH BRANCH 

 2011 JeDkins Arcade 



