209 



Pocket Magnifiers. 



No. 221. 



No. 224. 



No. 221. Zylonite Case, as in cut, size of lens 1 inch diameter, . . . fo.60 



>< 222. " " k 221, " Itf " " .... .90 



" 223. " " k * 221. " " IK " ... 1.15 



* 224. " " ' cut k ' of lenses, 1% and 1# in diameter, . 1.30 



Gossamer and Silk Bags. 



No. 225. Gossamer or Waterproof Bag, to cover Level in case of rain or dust. 

 " 226. Silk Bag, to cover Transit with solid silver graduations . 



Lubricants. 



No. 227. Bottle of Fine Watch Oil, for lubricating Transit Centers, etc. . 



$1.00 

 1.00 





Utensils for Cleaning Instruments. 



Xo 228. Camel's Hair Brush . 



229. Stiff Brush for cleaning screw-threads . . . . 



14 230. Chamois-skin for cleaning lenses, centers, etc. . 



* 231. Stick for cleaning centers .... 



80.40 

 .40 

 .50 

 .30 



Spirit Levels. 



No. 232. Engineers' Spirit Levels of all sizes and grades of ^nsitiveness, accu- 

 rately ground and tested by us. 

 Per inch, according to length and diameter . . t . from 80.80 to 91*00 



