METRO MANUAL, 



A Hand Book for Engineers 



i i 



Containing Technical Information Regarding The 

 Construction, Adjustment and Use of 



Transits, Tachy meters, Theodolites, Alidades, 

 Levels, Etc. 



Manufactured by 



Bausch & Lomb Optical Co. 



I) Rochester, N. Y. 



Branches: 



New York: 300 Fifth Ave. Washington: 61) Fifteenth St.. N. W. 



Chicago: 122 S. Michigan Blvd. San Francisco: 154 Suttrr St. 



Frankfurt a. M. <,. m. b.H.31 Schillerttraue. 



London: 37 & 38, Hatton Garden, B. C. 



Z) 

 Copyrighted 'v !i & l.omh Optical Co. 



