80 



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



No. 1172. 



No. 1174. 



No. 1176. 



No. 1184. 



No. 1186. 



No. 1188. 



No. 1190. 



No. 1192. 



No. 1196. 



1172. BELL JABS, Low Straight Form, Knob Top, with reground rim. 



No A B C D E F G 



Height, inside, inches i-'Vi 3M. 4 10 11 



Diameter, inside, inches 456 10 12 16 



Each $0.90 1.30 1.85 2.60 3.70 5.35 8.10 



1174. BELL JAR, Low Swelled Form, Open Top, (Hand and Bladder Glass), both rims ground. Diam- 

 eter at the bottom ' rim, 4% in. ; height, 4 in 2.25 



1176. BELL JAR, Capped. No. 1164 fitted with a brass cap for receiving either stopcock or a sliding 



rod. Without stopcock or rod 4.00 



1177. SLIDING ROD, with knob at one end and hook at the other for manipulation of apparatus inside 



of No. 1176 Bell Jar. Complete with packing screw, threaded 7/16^16 1.50 



1184. BELLS, Electric, D. C. Iron box, pivoted armature. 



No A B C 



Diameter of gong, inches 2% 3 4 



Each $0.50 .55 .70 



1186. BELLS, Electric, D. C., Skeleton Type. Pivoted armature, superior workmanship, nickel-plated 

 gong giving clear, penetrating tone. 



No A B C D 



Diameter of gong, inches 4 6 8 10 



Each 2.25 3.60 5.00 8.00 



1188. BUZZER, Electric, D. C. Iron box $0.45 



1190. BELLS, Electric, A. C., so-called Transformer Bells. For use on Nos. F3879 Bell Ringing Trans- 

 formers on voltages from 6 to 18. Loud'ringing dependable bells wjth carbon contacts, laminated 

 field and cores, closed movement and insulated current carrying parts. 



No : A B C D 



Diameter of gong, in 3 4 6 8 



Each 4.20 4.50 10.60 13.20 



For TRANSFORMERS for use with No. 1190, see general heading Electrical Instruments. 



1192. BELL, Electric, loud ringing, for outside service; entirely moisture proof; operates on 110 volt, 

 60 cycle, A. C. 6 inch gong 12.90 



1196. ELECTRIC BELL OUTFIT, consisting of No. 1184A Bell, No. 964 Dry Battery, No. 1200 Push 

 Button, 1 Ib. (150 feet) annunciator wire, and staples for putting up 2.00 



