530 



Optical Instruments. 



No. 54 355 



54 355. 1 : 8. 



54356. 1: 12. 



54 366. 1 : 6. 



54 367. 1 : 6. 



54 368. 1 : (i. 



54 358. 1 : 3. 



54 369. 1 : 7. 



54 370. 1 : 7. 



Optical Instruments. 



54.355. Camera obscura, Figure; size of image 140x100 mm 



54.356. Camera obscura, Figure, with Chevalier convex prism; size of image 400 x 400 mm 



54.358. Camera lucida, after Wollaston, Figure, with extending stand and two shielding 

 glasses 



54.359. - - without stand or shielding glasses, prism only in metal mount 



54.360. Simple Magnifying Glass, diameter 20 mm, magnification 10 times 



54.361. Cylindrical Magnifying Glass (Coddington (Mass), 22 mm diameter 



54.362. --idem, 30 mm diameter 



Folding Magnifier, 35 mm lens diameter, in horn mount: 



List No. 54,363 54,364 54,365 



With 1 '-' 3 Lenses 



0.3.0 0.4.0 0.5.0 



s. d. 



1. 0.0 

 4.16.0 



1.16.0 

 o. 15.0 

 0. 4.0 

 0. 4.0 

 0. 5.0 



CI. 6103, 1516,4530, 

 4529, 1517, 4527, 



4531, 



6077. 



