'CATALOGUE 



O F 



.Mathematical and Philofophical Inftruments, 



MADE AND SOLD BY 



G, E O R G E ADAMS, 

 .Mathematical Inftrument Maker to His Majesty, 

 No, 60, Fleet -Street, London, 



Optical Inftruments. 



£. s. 'd, 



H E beft double-jointed filver fpe£tacles, with glaffes — s t 0 



The beft ditto, with Brazil pebbles ! t Q 0 



:Single joint filver fpe£lacles, with -glafles — — o 15 o 



Ditto, with Brazil pebbles — — — .. a I0 0 



■ Double joint fteel fpeclacles, with glaffes o 10 6 



Another fort of ditto — — 076 



Beft fingle-joint fpe£tacles — — .' _ 050 



Ditto, inferior frames — - — .03 6 



Nofe fpe&acles, mounted in filver • — — 070 



'Ditto in tortoifefhell and filver " - — 0 .4 o 



.Ditto in horn and fteel — — o 1 © 



" Spectacles for couched eyes 



Spectacles with fhades 



■ Concave glaffes in horn boxes, for fhor t-fighted eyes 



Ditto mounted in tostoifefhell and filver, pearl and filver, in various 



manners, and at different prices 



^Reading glaffes, from.2s. 6d. to — ~ — 220 



Opera glaffes, from 10s. 6d. to — g 2 o 



Ditto of an improved conftrudion — — 1 1 o 



•Concave-and convex mirrors in frames, from 7s. 6d. to — 18 18 0 



-4 Telefcopcs 



