246 



NEGRETTI AND ZAMBKA, UOLBOKN VIADUCT, E.C., 



FIG. 848. 



FIG. 850. 



847 Portable Tripod Stands} for Telescopes, of Wood, with 



Brass Bolts and Nuts 



848 Ditto ditto with Vertical and Horizontal 



adjustments (fig. 848) 



849 Ditto ditto Brass head, with jointed Clip, or Cradle 



Telescope-holder, mahogany legs (fig. 849) 



850 Improved Alt -Azimuth Stand (fig. 850), for 



Astronomical Telescopes, well suited for Telescopes 

 Nos. 853, 856, and 857 ; Strong Metal Mountings, very 

 rigid, and conveniently portable .... 



Each. 

 s. d. 



Each. 

 s. d. 



1 12 6 1 16 



2 10 



330 4 10 



12 15 



851 Captains' or Pilots' Binocular Night or Look-out Glasses (see pages 234 to 237). 



FlG. 852. 



852 Negretti & Zambra's Traveller's Telescope consists of a highly-finished 

 portable Telescope, with Folding Table Stand (fig. 852). 



