58 



Stands of Medium Size, 



All stands of medium size, except Stand IV b , are fitted with the ABBE illu- 

 minating apparatus. 



The upper body is inclinable from the vertical to the horizontal position 

 of the tube; fitted with the old form of line adjustment only. The coarse ad- 

 justment of the focus is effected by means of rack and pinion. The draw-tube 

 slides in and out of a sleeve. 



The distance between the stage and the horseshoe-shaped base being slightly 

 less than with the large stands, some of the illuminating appliances described on 

 pp. 30 32 can only be used in the inclined position of the stands. (See 

 remarks on p. 32.) 



The mirror is easily removable and is adjustable in the direction of the 

 optical axis; with Stand IV it is, in addition, universally movable. 



Stand II*. 



This stand has a revolving, plain vulcanite stage, provided with a 

 centring appliance and having a diameter of 100 mm (4 in.). Fig. 27. 



Since it is fitted with a revolving stage, this is the only one of 

 the medium stands adapted for working with polarized light. 



For the purpose of observing axial images it is best to use the objective 

 combination &%, which screws into the threads of the draw-tube. 



Price: Code-words: 



No. 72: Sla/itf II a with onlinarv condenser, num. Ap. 1,4(1: ^larks 290.- . Participar. 



73: H a swing-oHl J/5- Particular. 



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. 



