248 



NEGBETTI AND ZAMBKA, HOLEORN VJADUCT, B.C., 



FIG. 854. 



854 



Negretti & Zambia's Signal Station or Telegraph Look-out Telescope, 

 having Rackwork and Sliding Adjustments to the eye-tube, mounted on a 

 strong steady tripod table stand, with universal movements and hinged clip 

 for holding the Telescope, so contrived that when not in use, the Telescope 

 can be quickly removed from its stand, and both be securely packed away 

 in the stout case supplied with the instrument (fig. 854). 



No. 

 1 

 2 

 3 

 4 

 5 



Length. 

 30 inches 

 36 

 40 

 44 

 48 



Diam. of O. G. 



2 inches 



These Telescopes have sufficient magnifying and defining power for distinguishing 

 bullet or shot marks on a target at the longest ranges. Also well suited for 

 Coast-Guard stations, or as a Sea-Side Look-out-glass. 



855 Achromatic Astronomical and Terrestrial Telescope (fig. 855), bright Brass 

 Body, Rackwork and Sliding Adjustment to eye-piece, mounted on a 

 pillar and brass claw Table Stand, having Horizontal and Vertical motions ; 

 fitted in polished mahogany case, with lock and key. 



Size of 

 Object Glass. Terres. 



2 inches. 1 

 2* .1 

 2* .1 



3 1 



Eye-pieces. 



Astro. 



Power. 

 With Terres. Eye-piece. With Astro. Eye-piece. Price. 



. 20 diameters 45 diameters . 10 10 



. 30 55 . 11 11 



. 40 70 . 14 14 



50 85 18 18 



Tripod Out-of-Door Stands suited for above, see page 246. 



