512 



Accessories for Spectrum Apparatus. 



No. 54127 



54131. 1:6. 



~-^*B F 



54 128. 1:5. 



54 133. 1 : 5. 



54 134. 1 : 2. 



54.127. Double Gap with micrometer adjustment, Figure, for comparing the luminous <* 

 intensities of two spectra, for demonstrations 2. 8. 



The colours of one spectrum are conducted through the gap by the aid of a total reflecting prism. : 



54.128. Universal Stand for Spectrum experiments, Figure 3. 0. 



The Stand serves for holding small glass troughs, spectrum tubes, the Delachanal and Mermet 

 spark tubes, and as a holder for glass tubes having platinum lugs. 



54.129. Small Glass Tube with platinum lugs. Price per 12 0. 6. 



54.130. Stand for holding the small glass tubes (M. P. II, 1, Fig. 475 [216]) 0. 4. 



54.131. Burner for Monochromatic light, after Terquem, Figure ' 1. 10. 



54.132. Burner for monochromatic light, after Noack, Figure (Ztschr. z. Ford. d. phys. 



U., 2, p. 67) .' . 0. Hi. o 



54.133. Breitenlohner's Spirit Lamp, Figure, with Bunsen burner attachment and safety 



tube, on tripod 0. 16. 



Spirit Bunsen Burners, substitute for Gas Burners: see Nos. 51,214 and 51,216, p. 209. 



54.134. Spirit Lamp, Figure, with adjustable holder for platinum wires, of brass ... 0.12.0 

 Bunsen Burners: see Nos. 51,184 et seq. 



54.135. Spectrum Lamp for continuous Vapour Spectra, after Eder andValenta, with a rotating 

 platinum wire net which plunges in the liquid (M. P. II, 1, Fig. 479), without plati- 

 num net 5. 0. 



The price of the platinum net (based on the current price of platinum) quoted on application. 



Cl. 5212, 3390, 1409, 

 1408, 1410, 3391. 



