186 



No 15. 

 Alt. -Azimuth. 



is made by C. L. Berger & Sons. 



Repeating horizontal circle eight, non-iv|>i-;itiiii; vertical circle 6 indies in di- 

 ameter. The former can be provided wit h 2, 3 or4 verniers reading to 10", the lat- 

 ter is provided with 2 verniers reading to 20". The telescope has a clear aperture 

 of 1)4 and a focus of 11 inches. Striding level and filar micrometer read to seconds 

 of arc. Mahogany box, etc. 



Price, all complete as in cut, $68O.OO. 



