BAIRD &TATLOCK (LONDON) LTD. 



Electrical Measuring Instruments 



Used for Physico -Chemical Research Work. 



5318-5320 



5318 s Wheatstone Bridge Boxes (Portable Form, with hinged movable cover; Battery and 

 Galvanometer Keys), in mahogany case with polished vulcanite top, solid brass blocks 

 with plugs ground to fit, and interchangeable. Coils, i 50 ohms. Total resistance 

 no ohms. Number of proportional coils 2 pairs 



5319 s Wheatstone Bridge Boxes as above. Coils, i 500 ohms. Total resistance 1,100 ohms. 

 Number of proportioned coils 3 pairs 



5320 s Wheatstone Bridge Boxes as above. Coils, i 5,000 ohms. Total resistance ii.no 

 ohms. Number of proportioned coils 3 pairs 



Accuracy of all Coils to within i part in 1,000. 



5321-5324 



5321 s Series Resistance Boxes in polished mahogany cases with polished ebonite cover. The 

 plugs are fitted with vulcanite heads, and are carefully ground to fit the brass blocks 

 which are well undercut for clearance ; all plugs are interchangeable in each box. 

 The coils are wound on metal bobbins, and are carefully insulated. With coils, 

 i 50 ohms. Total resistance no ohms 



5322 s Resistance Box as above, with coils, .150 ohms. Total resistance in ohms. 



5323 s Resistance Box as above 

 5324 s Resistance Box as above 



1500 

 i 5,000 

 Accuracy 1 



1,110. 



11,110 



600 



7 10 



8 10 



3 10 

 5 

 5 

 6 10 



in 500. 



