FAUTH & CO., WASHINGTON, D. Cv 
29 
The telescope has an aperture of \\ inches, with astronomical 
or terrestrial eye-piece, and 7 and 10 inches focus respectively. 
It is very powerful, has a flat field, and defines sharp. Extra 
stadia lines, for measuring distances, besides the ordinary 
cross lines, are ruled on diaphragm. The compass-needle 
is 4 inches long; clamps and spring tangents to telescope 
axis and plates; striding level and level on telescope in¬ 
dicate five seconds of arc. A circular level is attached to 
vernier plate to level instrument up by. This instrument, 
completely packed, with all accessories and tripod. $815.00 
This style of Theodolite we make also with circles of 7 inches 
diameter and bevelled edge ; graduation covered, reading to 
5 seconds ; telescope 1^-inch aperture ; these improvements 
increase the price..... 95.00 
rT, 
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