CENTRAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



377 



No. 9686. 



No. 9706. 



No. 9694. 



FLASKS, Distilling. Engler, see general heading Flasks. 



FLASKS, Distilling, Hempel, see general heading Flasks. 



9686 FREEZER, TagliaTrae Oil, for determining the congealing point of oils. Consists of an oil-cool- 

 ing chamber, containing a receiver mounted on a rocking shaft to facilitate the introduction 

 of the oil cup and to show whether congealing is taking place; and an ice chamber with dram 

 faucet, surrounded by a heavy insulating jacket. A glass door enables the operator to observe 

 the operation at all times. Two stop-cocks are connected with the oil-cooling chamber to 

 enable air to be blown through to control the temperature. Complete as described with three 

 special standard angle thermometers ; f 52 - 80 



Note: This instrument is furnished to order only and we can not promise immediate ( 



GAGE RODS, FOR DETERMINING CAPACITY OF BARRELS 



9692. GAGE ROD, of seasoned maple, 36 inches long 



9694. GAGE ROD, of seasoned lancewood. 36 inches long, with steel point, ivory face, brass back 



and indicating slide, graduated to 120 gallons 5.77 



9696. GAGE ROD, similar to No. 9694, but made to fold to 18 inches 6.16 



9698. GAGE ROD, of solid tool steel, with hardwood handle, ivory face, and 



indicating slide, graduated to 120 gallons 9.90 



HYDROMETERS, for Oil Testing, see general heading Hydrometers. 



9706. LUBRICATION TESTER, Thurston's, for testing the lubricating quality 

 of oils by means of the friction of a bearing on a rotating shaft. A 

 heavy pendulum measures by its deviation the friction. The machine 

 automatically records the pressure per square inch, the total pressure 

 on the iournal, the total friction and the temperature of the bearing. 

 F. O. B. . .Philadelphia 350.00 



Note: This instrument is furnished to order only and we cannot promise 

 immediate delivery. 



9710. MANUAL for Inspectors of Petroleum, containing correction tables for 

 hydrometers, enabling the true gravity at any temperature to be deter- 

 mined at a glance -20 



9714. MELTING POINT TESTER, Tagliabue's for Wax. Requires only a tea- 

 spoonful of material and enables a test to be made in ^ of the usual 



time. Complete with two standard thermometers 26.40 



Note: This instrument is furnished to order only and we cannot promise 

 No. 9714. immediate delivery. 



