Bauhaus-Universität Weimar

Titel:
Apparatus, Tests and Supplies for Psychology, Psychometry, Psychotechnology, Psychiatry, Neurology, Anthropology, Phonetics, Physiology, and Pharmacology
Person:
Stoelting, C. H.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit13685/17/
C. H. STOELTING CO., CHICAGO, ILL., U. S. A. 
11 
Number 
1211!». 
12123. 
12127. 
12131. 
Price 
Spectacle with medium dark blue glass........................................... $ 3.00 
Trial Frame, Simple, Double-Cell. (227:X9)...................................... 2.50 
Trial Set. A single-cell trial frame with a blank disk and 1 lens each of —l.S. and 
+ 1.S. for determining approximately the type of refractive error.................... 5.30 
Colored Trial Glasses. One pair each light and dark shades of blue, green, yellow, red, 
and smoke (10 pair in all), in metal rims to lit trial frame. (139:X114)............. 26.00 
No. 12111 
12151. Ophthalmoscope, with battery in handle. Has a lens range of +16.D. and —20.D. 
This instrument is extremely simple in construction and can be handled by an inex¬ 
perienced person for examining the optic nerve, retina, and circulation.............. 42.50 
12155. Eye Observation Mirror, Freeman’s. Consisting of a head-band with a bracket for 
holding the mirror on the right or left side of the subject’s head, so that eye move¬ 
ments can be seen by an observer at the rear. (59:X9)............................ 8.00 
12176. Schematic Eye, De Zeng’s. A modification of the Thorington eye, made of metal and 
supported on a base. The front part of the eye is provided with an adjustable dia¬ 
phragm, semicircular graduations, and supports for trial lenses. The sliding tube is 
graduated so that the eye can be set to reproduce hypermetropic and myopic conditions 10.80 
12181. Demonstration Eye, Kuehne’s. A rectangular metal case with glass side and rear. 
The front of the apparatus is made with a tubular projection in which can be inserted 
cells with lenses representing the normal cornea, the astigmatic cornea, and the neu¬ 
tralizing effect of water when the cornea is immersed. There is also furnished a set of 
frames with lenses, etc., for suspension on the inside of the tank in order to demon¬ 
strate hypermetropia, myopia, effect of a large and a small iris, the difference in focus 
between central and marginal rays, etc. Filling the tank with water to which a few 
drops of eosin have been added, and using a cardboard cross illuminated from the 
rear in a dark room, a demonstration can be given of all of the errors of refraction 
and their correction. The series of trial lenses which is part of the apparatus can be 
supported in the circular ring suspended from the front of the apparatus. The forma¬ 
tion of the image can be traced at the glass side of the tank, and the final image seen 
at the rear on the suspended ground glass. Complete as illustrated, with instructions. 
(S.P.: 1 001 : S.P.P.:350-352) ...................................................... 80.00
        

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