204 



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



No. 4280. 



No. 4282. 



No. 4284. 



4266. 



4267. 

 4270. 



4272. 



4274. 



4276. 

 4280. 



4282. 



4284. 

 3143. 

 3144. 



4350. 



DRILL, Hand, Automatic, 9M> inches long, nickel-plated. Eight steel fluted shank drills, from 

 YIQ to n / M inches, enclosed in the handle in numbered compartments. A very useful tool for 



boring holes in wood, bone, etc $2.00 



EXTRA DRILL POINTS, fluted shank, as supplied with No. 4266. In sets of eight. .Per set .80 

 DRILL, Hand, Automatic, 11 inches long, nickel-plated, with wood handle. Capacity of chuck, 



to y inch round-shank drills. Without drill points 2.80 



DRILLS, Twist, straight round shank, for wood or metal. 



Diameter, inches He V6 ^10 % ^16 % 7 Ae % 



Each 14 .16 .20 .28 .36 .50 .72 1.00 



DRILLS, Twist, straight round shank. Nos. 1 to 60, Stubs' steel wire gage, mounted on neat iron 

 base which can also be used as a Stubs' Steel and Wire G-age. Indispensable for the labora- 

 tory shop 9-45 



DRILL GAGE. Stubs' steel gage Nos. 1 to 60 2.25 



DRYING- APPARATUS, Bennert's, for organic analysis, consisting of four drying jars with 



sealed in tubes. Mounted on board as shown 13.50 



DRYING- APPARATUS, Tauber's, with 2 U tubes and 4 jars with sealed in tubes. Mounted on 



board as shown 16.50 



DRYING OVENS, soe Ovens, Drying. 



DRYING TUBE, Liebig's 40 



DRYING TUBE, Vanier's, for zinc, as used in No. 3138 Vanier Combustion Apparatus 1.10 



DRYING TUBE, Vanier's, for sulphuric acid, as used in No. 3138 Vanier Combustion Appar- 

 atus 1-90 



EBULLIOMETER, Salleron's, of polished copper with jacket around burner; for the rapid 

 estimation of alcohol in wine, beer, etc. Complete in case with directions for use 60.00 



