Permanence of the Rutherfurd Photographic Plates. 201 







Operation 4, 









First Series, 





Second Series. 



Scale. 



Screw. 



Diff. 



Scale. 



Screw. 



Diff. 



78 

 77 

 76 



75 

 74 



7.0076 



9.01 15 



II. 0170 



13-0235 

 15.0226 



2.0039 

 2.0055 

 2.0065 

 1.9991 



Operation 5, 



mm. 

 78 



77 

 76 



75 

 74 



7^0088 



9-0125 



11.0175 



13.0230 



15.0225 



R 



2.0037 

 2.0050 

 2.0055 



1-9995 



First Series, 





Second Series. 



Scale. 



Screw. 



Diff. 



Scale. 



Screw. 



Diff. 



mm. 



78 



77 

 76 



75 



74 

 73 



5-0115 



7.0160 



9.0205 



11.0285 



13.0320 



15-0322 



K 



2.0045 

 2.0045 

 2.0080 

 2.0035 

 2.0002 



Operation 6. 



mm. 

 78 



77 

 76 



75 

 74 

 73 



5-0131 



7.0170 



9.0210 



11.0275 



13-0315 

 15-0320 



K 



2.0039 

 2.0040 

 2.0065 

 2.0040 

 2.0005 



First Series. 





Second Series. 



Scale. 



Screw. 



Diff. 



Scale. 



Screw. 



Diff. 



mm. 



77 

 76 



75 

 74 

 73 



R 



5.0026 



7.0095 



9.0140 



II. 0190 



13.0239 



B 



2.0069 

 2.0045 

 2.0050 

 2.0049 



Operation 7. 



mm. 



77 

 76 



75 

 74 

 73 



5-0115 



7-0155 



9-0235 



11.0280 



13.0314 



K 



2.0040 

 2.0080 

 2.0045 

 2.0034 



First Series. 





Second Series. 



Scale. 



Screw. 



Diff. 



Scale. 



Screw. 



Diff. 



76""' 

 75 

 74 

 73 



K 



5.0005 



7.0070 



9-0085 



II. 0152 



E 



2.0065 

 2.0015 

 2.0067 



Operation 8. 



mm. 

 76 



75 

 74 

 73 



E 

 5.OI6I 



7-02I5 



9.0250 



11.0308 



E 



2.0054 

 2.0035 

 2.0058 



First Series. 





Second Series. 



Scale. 



Screw. 



Diff. 



Scale. 



Screw. 



Diff. 



mm 



75 

 74 

 73 



5.0020 

 7.0020 

 9.0101 



2.0000 

 2.0081 



75 

 74 

 73 



5.0024 

 7.0020 

 9.0092 



B 



1.9996 

 2.0072 



