122 Emil Sydow, Berlin NW. 



Gerloff's Orthoscope. Burchard's Stereoscope. Placido's 

 Keratoscope. Galezowski's Strabometer. Horstmann's Strabo- 

 meter. Laurence's Strabometer. Glass strabometer. Schweigger's 

 muscle gauge. Snellen's International Colour Scale with spectacles. 



Burchardt's International Sight Tests. Schweigger's Sight 

 Tests. Snellen's and also Nieden's Sight Tests. Dr. Louis Wolffberg's 

 Relievo Plates; Edition 1893. Dr. Louis Wolffberg's Apparatus for 

 Colour Diagnosis. Wolffberg's Perimeter objects. 



Electrical Apparatus. Schweigger's newest Electrical 

 Ophthalmoscope, with adjustable incandescent light. 



(Entirely new 1893 pattern) 

 Latest Electrical Cornea Lens, excellent for direct illumination 



Schweigger's Binocular Electrical Ophthalmoscope (Latest 1893 

 pattern.) 



Sciascopes: Schweigger's Sciascope. Latest form. 

 Roth's , " . 



Wolffs , ... aluminium. 



Roth's Sciascope and Phacometer (New). 



Refraction Ophthalmoscopes : Knapp's Refraction Ophthal- 

 moscope. 



Schweigger's and Loring's Refraction Ophthalmoscope. 



(Latest form with toothed wheels) 

 Roth's Refraction Ophthalmoscope. 



(Entirely new automatic pattern) 

 Patented in Germany, D. R. P. No. 66215. 



(Unsurpassed construction.) 



Burchardt's Refraction Ophthalmoscope, combining all test lenses 

 contained in the spectacle case and going even beyond these. 



Loring's, Morton's, Lyder's and Borthen's, Hirschberg's (two 

 patterns), Julers's, de Wecker's, Landolt's, Noyes's, Haab's. 

 Swanziger's, Grossmann's and various other Refraction Ophthal- 

 moscopes. 



Test Spectacles: Light! Of Aluminium! Light! 



Burchardt's Universal Spectacle, with toothed wheel adjustment; 

 excellent instrument for all occurring measurements. 



Gutman's Universal Spectacle. 



Nachet's, Schweigger's, Burchardt's and other Universal 

 Spectacles. 



Perimeters: Pedrazzolfs Perimeters (New entirely original 

 construction). 



Foerster's Perimeter. Blix's Self registering- Perimeter. 



