208 D. W. Shea — Calibration of an Electrometer. 



Resistance be- 

 tween point on 

 coils to the 

 ground and 



Temperature, 14° 0. 



Scale readings in cm. 



joint to 

 idrants in 

 ohms. 



Charge of the 

 quadrants 

 in volts. 





1000- 



2-5 



2-12 



2000- 



5-0 



4-29 



3000- 



Y-5 



6-58 



5000- 



12-5 



11-30 



7000" 



17-5 



16-41 



8000- 



20-0 



19-02 



9000- 



22-5 



21-86 





Mean of the 

 two scale 

 readings. 



Deflection 



of needle in. 



degrees. 



2-14 



2-13 



0°29' 



4-29 



4-29 



58-5 



6-58 



6-58. 



1 29-5 



11-32 



11-31 



2 34 



16-44 



16-425 



3 43 



19-06 



1904 



4 18 



21-97 



21-915 



4 56 



Temperature, 16° C. 



1000- 



2-5 



1-93 



1-89 



1-91 



26 



2000- 



5-0 



3-90 



3-94 



3-92 



53 



3000- 



7-5 



6-00 



6-03 



6-015 



1 22 



5000- 



12-5 



10-37 



10-37 



10-37 



2 20-5 



7000- 



17-5 



15-15 



15-18 



15-17 



3 26 



8000. 



20-0 



17-64 



17-71 



17-68 



3 59-5 



9000- 



22-5 



19-85 



19-88 



19-865 



4 28-5 



oooo- 



25-0 



22-15 



22-24 



22-20 



5 00 



Charge of Needle, 80 volts. 



Temperature, 6° -5 C. 



1000- 



1-3 



2-35 



2-35 



2-35 



0°32' 



2000- 



2-6 



4-72 



469 



4-705 



1 4 



3000- 



3-9 



7-15 



7-13 



7-14 



1 37 



5000- 



6-5 



12-01 



12-04 



12-025 



2 43-5 



7000- 



9-1 



16-94 



16-95 



16-945 



3 49-5 



8000 



10-4 



19-32 



19-30 



19-31 



4 21-5 



9000- 



11-7 



21-72 



21-72 



21-72 



4 53-5 



Temperature, 9° C. 



1000- 



1-3 



2-26 



2-26 



2-26 



31 



2000- 



2-6 



4-57 



4-57' 



4-57 



1 2 



3000- 



3-9 



6-83 



4-75 



6-79 



1 32 



5000- 



6-5 



11-34 



1134 



11-34 



. 2 34 



7000- 



9-1 



16-13 



16-14 



16-135 



3 38-5 



8000- 



10-4 



18-40 



18-35 



18-375 



4 8-5 



9000- 



11-7 



20-59 



20-53 



20-56 



4 37 







III. 

 Temperature, 12° C. 







1000- 



1-3 



2-47 



2-46 



2-465 



0°33'-5 



2000- 



2-6 



4-90 



4-85 



4-875 



1 6-5 



3000- 



3-9 



7-31 



7-26 



7-285 



1 39-5 



5000- 



6-5 



12-12 



11-95 



12-035 



2 44 



7000- 



9-1 



16-74 



16-73 



16-735 



3 46-5 



8000- 



10-4 



19-08 



19-07 



19-075 



4 18 



9000- 



11-7 



21-43 



21-36 



21-395 



4 49 



