62 



Stand VI a . 



This stand has a fixed stage 80 mm (about 3*/ 4 in.) square. Upper body 

 inclinable to horizontal position of tube; supplied only with old form of fine 

 adjustment; head of micrometer-screw not provided with divided scale; coarse 

 adjustment by rack and pinion. Fig. 29. 



The tube, when fully extended, is 160 mm (6y, in.) long; in the absence of 

 a millimetric scale the correct tube-length, when a revolving nose-piece is being 

 used, is indicated by a line cut round the outside of the draw-tube. 



The illumination is obtained by means of the universally movable mirror. 

 The sliding sleeve fixed below the stage 'by a bayonet joint is adapted for the 

 cylinder-diaphragm, No. 30, and the iris-cylinder diaphragm, No. 40, but the illu- 

 minating apparatus, No. 41 (see pp. 34 and 35) may also be inserted. 



Price : Code-words : 



No. 80: Stand VI a with cylinder-diaphragm No. 39 . Marks 130.. Pasage. 



,, 81: ,, ,, ,, it is-cy Under ,, ,, 40 . ,, 136. . Pasamano. 



,, 82: ,, ,, illuminating apparatus, No. 41 ,, 750. . Pasapan. 



Owing to its compactness Stand VI a is particularly suitable for a Travelling 

 Microscope. 



We supply the stand, if specially ordered, enclosed in a small leather or 

 canvas case with shoulder -sling. As it was found practicable to substitute 

 aluminium for some of the brass parts, the total weight of the stand with 

 complete optical equipment (4 objectives, 3 eye-pieces) and the most indispen- 

 sable specimen utensils, also including the case, has been reduced to between 

 3 and 4 kg. (about (jy 2 9 Ibs.). (For additional details see special prospectus 

 relating to travelling microscopes.) 



Price : Code-word : 



No. 83: Stand VI a with illuminating apparatus, No. 41, 

 in leather or canvas case instead of mahogany 

 cabinet . Marks 158. . Pasaporte. 



Stand VI b . 



Stand Vl b corresponds in shape and size to Stand VI* but is fitted with a 

 revolving stage bearing a graduated scale on its circumference. There is also 

 a centring appliance for objectives situated on the lower extremity of the tube. 



The prices quoted above include only the stands in mahogany cabinets, without 

 oculars, objectives and revolving nose-pieces. 



Suitable complete specifications are appended at the end of this catalogue. 



