D. W. Shea — Calibration of an Electrometer. 209 



IV. 



Temperature, 17° C. 



Resistance be- 

 tween point on 

 coils to ground 

 and point to 

 quadrants in 

 ohms. 



Charge of 



the 



quadrants in 



volts. 



Scale readings in cm. 



Mean 



of 



the two 



scale readings. 



DcflBCtlOD 



Right. 



►J 



of 



the needle in 



degrees. 



1000- 



1-3 



2-60 



2-59 



2-595 



35-5 



2000- 



2-6 



5-05 



4-97 



501 



1 8 



3000- 



3-9 



7-60 



7-51 



7-555 



1 43 



5000- 



6-5 



12-55 



12.41 



12-48 



2 47 



1000. 



9-1 



17-35 



17-23 



17-29 



3 54-5 



8000- 



10-4 



19-50 



19-57 



19-535 



4 24-5 



9000- 



11-7 



21-85 



21-78 



21-815 



4 545 



Charge of Needle, 120 volts. 







Temperature 8° C. 







1000- 



0-7 



2-29 



2-30 



2-295 



0°31' 



2000- 



1-4 



4-62 



4-61 



4-615 



1 3 



3000- 



2-1 



7-04 



6-99 



7-015 



1 35-5 



5000- 



3-5 



11-77 



11-82 



11-795 



2 40-5 



7000- 



4-9 



16-47 



16-41 



16-44 



3 43 



8000- 



5-6 



18-84 



18-79 



18-815 



4 14-5 



9000- 



6-3 



21-22 



21-20 



21-21 



4 46-5 



1000 

 2000 

 3000 

 5000 

 7000 

 8000 

 9000 



II. 



Temperature 12° C. 



0-7 2-23 2-24 



1-4 4-37 4-32 



2-1 6-56 6-49 



3-5 10-99 11-01 



4-9 15-52 15-56 



5-6 17-99 18-00 



6-3 20-20 20-20 



2-235 



0°30'-5 



4-345 



59 



6-525 



1 27-5 



11-00 



2 27 



15-54 



3 31 



17-995 



4 3-5 



20-20 



4 34 



1000- 



0-7 



2000- 



1-4 



3000- 



2-1 



5000- 



3-5 



7000- 



4-9 



8000- 



. 5-6 



9000- 



6-3 



III. 



Temperature 17° C. 



2-43 2-44 



4-86 4-87 



7-25 726 



12-02 12-01 



16-74 16-76 



19-03 19-12 



21-51 21-53 



2-435 



0°33' 



4-865 



1 6 



7-255 



1 39 



12015 



2 44 



16-75 



3 47 



19-075 



4 19-5 



21-52 



4 51 



Charge of Needle, 160 volts. 







Temperature 7° C. 







1000- 



0-55 



2-28 



2-28 



2-28 



0°31' 



2000- 



1-10 



4-53 



4-52 



4-525 



1 1-5 



3000- 



1-65 



6-80 



6-79 



6-795 



1 32-5 



5000- 



2-75 



11-28 



11-21 



11-245 



2 33 



7000- 



3-85 



15-78 



15-67 



15725 



3 33-5 



8000- 



4-40 



18-00 



17-93 



17-965 



4 4 



9000- 



4-95 



20-30 



20-20 



20-25 



4 34-5 



