No. 54082. 



Spectrum, Colour Mixing, Spectrometers. 



505 



54 080. 1 : 6. 



54081. 1:6. 



Spectrum Apparatus and Accessories, Spectrometers, 



Spectographs, etc. 



54,080. Large 

 diameter 



Precision Spectrometer, Figure, with rotary divided circle 255 mm 



The divided circle is graduated in Viz an d has alidade and two microscopes for estimating to 

 1 . The telescopes, with 33,5 mm aperture, can be adjusted vertically. The entire instrument can 

 be rotated about its vertical axis, has a symmetrical gap with comparison prism, reflecting eyepiece 

 and an adjustable prism of 50 mm. 



54.081. Spectrometer after Bunsen, Figure, with fixed divided circle 270 mm diameter 



_The circle is divided in Ye , the vernier reading gives 10". The objectives have a focal length 

 of 325 mm and aperture of 33,5 mm. The gap with comparison prism opens symmetrically to the 

 right and left. The apparatus has a rotary table for taking a number of prisms. Two oculars (one 

 after Gauss) and a prism pertain to the^ apparatus. The entire apparatus can be rotated about a 

 vertical axis. 



54.082. Polarisation Outfit for above, with two nicols and two position circles 100 mm diameter, graduated 

 on silver, vernier for 1 / lt> and Babinet Compensator for elliptic polarisation 



s. d. 



75. 0.0 



45. 0.0 



22. lit. d 



Cl. 1373, 1374. 



