BAIRD &TATLOCK (LONDON) LTD. 



5772 



5772 T Browning's New Model Spectroscope, " College." Price, complete with ij-in. dense 



flint prism, comparison prism, magnifier for reading verniers, in cabinet . . . . 8150 



This instrument is similar to the new model " Universal " (Fig. 5771), but is fitted with rack-work focussing 

 to telescope, fine screw adjustment to telescope and to verniers. It is also fitted with twa verniers for greater ease 

 and accuracy in reading. 



5773* Browning's New Model Spectroscope, " Analyst's," in cabinet . . . . 950 



This instrument is exactly similar to the new model "College," No. 5772, but is also provided with rack-work 

 motion to collimator, as well as telescope. 



5774 

 57741 Table Spectroscope, by Hilger, No. 1, "South Kensington Type." 



The divided circle is 6 in. in diameter, divided all round to read by vernier to one minute of arc. The prism 



1 table rotates, has a clamp for the prism, and a division for setting the same. The prism can be of either light 



i or dense flint as desired. The collimator has a well-made adjustable slit, with non-corrosive jaws, wedge for 



reducing the aperture, comparison prism, and protective cap. Screw adjustment is also provided for correcting 



the parallelism of the jaws should this at any time require correction. The telescope has rack and pinion focussing, 



high and low power eyepieces with spider-webs for measurement, and tangent screw for slow motion. 



i The objectives of both telescope and collimator are good achromatics of n J in. focal length and ij in. clear 



i aperture. The above is mounted on a strong iron tripod stand. 



Price .. .. .. .. .. .. .. .. .. .. 10 10 



ACCESSORIES FOR ABOVE. 



1 5775 T Levelling screws to above . . . . . . . . . . . . . . - 1 



5776 T Photographic scale adapted on a third tube uniform in design with telescope and collimator 2 15 

 5777 T Camera attachment to above . . . . . . . . . . . . ..776 



5778 T Screw adjustment to photographic scale . . . . . . . . . . . . 12 6 



5779 1 Well-made case, with lock and key . . . . . . . . . . . . 1 15 



1049 



