C 10 ) 



GREATLY REDUCED PRICES 



OF 



OBJECT-GLASSES MANUFACTURED BY 



R. & J. BECK, 



68, CORNHILL, LONDON, E.G. 



ECONOMIC ACHROMATIC OBJECT-GLASSES, 



AfPLICABLE to all ISeTBOrKSTS MADE WITH THE UNIVERSAL SCRFWT. 



N.\ 



Focal length. 



'. Angle 



I aper- 

 I ture, 

 i about 



Price. 



i MAGKimNG-POWEB, 



, with 6-inch body and 

 eye-pieces. 



No. 1. : No. 2. No. 3. 



150 

 151 

 152 

 153 



3 inches 

 2 inches 

 1 inch . 

 § inch . 



154 i inch 



155 f inch 



6 



8 

 18 



38 



CO 



156 

 157 



iinch no 1 3 10 



-j^imm. 



6 



27 

 41 



106 



205 

 415 



630 



800 



1500 



Eevised Catalogue sent on application to 

 R. &: J. BECIi, OS, Coi-nliill. 



