45 COENHILL, B.C., AND 122, KEGENT STREET, W., LONDON. 



FIG. 1316. 



FIG. 1315. 



FIG. 1320. 



QUADRANTS OR OCTANTS. 



1315 Ebony Quadrant, with Tangent screw to index, in oak 



case (fig. 1315) 



1316 Ditto ditto with two Tangent screws, and bar to index 



and vertical screw (fig. 1316) 



1317 Ditto ditto ditto, with six shades . 



1318 Telescope with shutter to above, extra .... 



1319 Ebony Quadrant, with two Telescopes, reading to 30 



seconds, long centre, and seven shades in box . 



1320 Metal Quadrant, best quality, divided on Ivory, with 



Achromatic Telescopes, long centre, seven shades and 

 index magnifier, in mahogany box (fig. 1320) 



1321 Metal Quadrant, or Half Sextant, best quality, divided 



on Silver, with Two Telescopes, long centre, seven 

 shades and index magnifier, in mahogany box . 



1322 Ditto, ditto, with extended Arc 



s. (I 



2 10 



330 



3 10 



066 



4 10 



550 



660 

 6 10 



