BAIRD &TATLOCK (LONDON) LTD. 



The Limb is shaped so as to form a convenient handle for carrying and no working part is touched when so used. 

 I A clamping handle is provided to the axis joint. 



I lii-, instrument is figured under No. 1356, and has a stage with an ebonite surface 4 in. by 4 in. A mechanical 

 | stage can be attached and any other necessary fittings added at a subsequent date to purchase. 



(For illustration see page 270). 



Watson's Microscope, B. & T. Model. Stage covered ebonite with clear working surface, 

 4 in. by 4 in. ; with plain underfilling tube to carry condenser, arranged to lift aside out 

 of the optical axis. 



1356 r Microscope, Stand only, in mahogany case 



7 10 



Complete Sets, consisting of above microscope, mahogany case with lock and key, and 

 the following accessories : 



1358' Microscope, with two objectives, J in. and choice of i in., in., or In. ; i ocular, No. i, 



2, 3 or 4 9 15 



i!359 T Microscope, with two objectives, Jin. and choice of i in., in. or i in. ; 2 oculars ; double 



nosepiece . . . . . . . . . . . . . . 10 7 6 



1360' Microscope, with two objectives, J in., and choice of i in., f in., or \ in. ; 2 oculars ; 



double nosepiece ; improved Abbe illuminator with iris diaphragm .. .. .. 11126 



1361' Microscope, with two objectives, \ in., and choice of i in., in. or i in. ; 3 oculars; 

 double nosepiece ; improved Abbe illuminator with iris diaphragm with spiral focussing 

 underfilling .... .. 12 10 



1362' Watson's Microscope, B. & T. Model, for Bacteriology, with three objectives, \ in. 

 and choice of i in., f in. or i in., and T ^ in. oil-immersion 1.30 N.A. ; 3 oculars ; triple 

 nosepiece ; improved Abbe illuminator with iris diaphragm . . 17 5 



1363' Microscope, with three objectives, \ in. and choice of i in., in. or i in., and -^ in. oil- 

 immersion 1.30 N.A. ; 3 oculars ; triple nosepiece ; improved Abbe illuminator with iris 

 diaphragm with spiral focussing underfitting 



1364' Attachable Mechanical Stage with divisions to movements, for above 



1365' Compound Substage, with screws to centre and rackwork to focus, for above . . 



17 17 6 

 extra 376 

 1 17 6 



B. & T. MICROSCOPE. 

 1366. 



This is figured and described under No. 1366 on page 272, and is precisely similar to No. 1356, but has the 

 addition of a mechanical stage and a compound substage. 



The mechanical stage is constructed as a part of the whole instrument and gives a range of movement of 2 in. 

 horizontally, and I in. vertically. 



The Compound Substage which carries the Condenser has rackwork to focus and screws to centre. 



The Body Tube is of large diameter (ij in.) rendering the instrument suitable for Photo Micrography. In the 

 ordinary way Student's eyepieces would be used, but if it were desired to employ large sized eyepieces, the diameter 

 of the body allows of sufficiently large draw-tube to be supplied to accommodate them. 



The Fittings are all of the Royal Microscopical Society's standard size. 



The Microscopes are substantially constructed for continuous work, and will maintain their permanent working 

 efficiently, notwithstanding continuous usage. 



CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMlCALS-jf 



