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



413 



No. 10924. 



No. 10926. 



No. 10928. 



No. 10932. 



10902. 

 10904. 

 10905. 

 10906. 



10910, 

 10911, 

 10914. 



10916. 



10918. 



3131. 



10922. 



10924. 



10926. 



10928. 



10932, 



POLISHING HEADS, Electric, for either A. C. or D. C. Will meet all requirements for light 

 grinding, buffing, etc. Motor enclosed, protecting all working parts from flying dust and dirt. 

 Bearings are made of extra heavy phosphor bronze, steel shaft *-inch in diameter. Lubrica- 

 tion is automatic by means of feed wick oil cups. Motor practically noiseless in operation. 

 Has a speed of 3,000 r. p. m. and will develop i/ 6 h. p. Dimensions: height over all, 9Ms inches; 

 base, 6x5 inches; length of shaft, 9VS inches. Finished in black japan. Buffing attachment to 

 hold small buffs for buffing wheel may be had. (See No. 10905.) Has emery wheel 5 inches 

 in diameter, %-inch face, indicating snap switch, attachment plug and six feet reinforced cord. 



No A B C D 



A. C. D. C. 



For volts 110 220 110 220 



POLISHING HEADS, with adjustable tool rest $48.00 48.00 36.00 36.00 



POLISHING HEADS, without tool rest 43.50 43.50 31.50 31.50 



BUFFING ATTACHMENT, for either of the above Electric Polishing Heads 2.50 



PULLEY, 2^ inches in diameter, for % -ineh round belt, for attaching to shaft of Nos. 10902 



and 10904 1.00 



^OBCELAIN WARE, see specific headings, Capsules, Crucibles, Dishes, Mortars, etc. 



POTASH BULBS 



POTASH BULB. Bender & Holbein, with aluminum base 2.75 



POTASH BULB, Bender & Holbein, glass parts only 2.50 



POTASH BULBS, Bowen. No ." A B 



Size small large 



Each 2.50 3.00 



POTASH BULB. Geissler 1.50 



POTASH BULB, Geissler, with drying tube ground on 2.00 



POTASH BULB. Johnson, as used in Combustion Apparatus No. 3120 1.00 



POTASH BULB. Liebig, with five bulbs 50 



POTASH BULB. Liebig-Dittmar, with trap 80 



POTASH BULB, Mitscherlich 50 



POTASH BULB, Norris, as used in determining sulphur in iron and steel ' .60 



POTASH BULB, Peligot, with three bulbs 40 



POTASH BULB, Vanier, see Absorption Tubes. 



