42 
Stand V^ inclinable, fixed stage OOXOO mm (3 VaXSVs")- 
Coarse adjust m e n t by sliding tube. 
Fine adjustment by micrometer screw. 
The lower body of the instrument, including the Abbe illu- 
minating apparatus, identical to that of stand IV^ (without iris 
and cylinder diaphragms which may be added at any time at an 
extra charge of 31. 15. — and M. 7. — ). (Fig. 9) 
Stcind V^. Similar to the above, but without the Abbe illu- 
minating apparatus. Other arrangements as in stand IV^* . . . 
Stand V' with illuminator No. 18 
Babuchin Stand. This instrument, made after the design of 
Prof. Babuchin of Moscow, is included in the series of our stands 
as it possesses several novel features of i)ractical value which 
cannot be combined in the ordinary form of stand. 
These are substantially as follows: 
1 ) The Abbe illuminating apparatus is constructed in a manner 
resembling that adopted by Nachet. The condenser system mounted 
in a sleeve may be inserted from above in the carrier which 
can be screwed downwards and swung out to the left. 
By these means the condenser system is easily changed for another 
of different aperture, or for a cylinder diaphragm or polariser. 
2) Below the condenser carrier is a sliding piece admitting 
of a rotation about the optic axis, in which the iris diaphragm 
may be inserted and placed in any excentric position for oblique 
illumination. 
o) The illuminating apparatus is moved along the o])tic axis, 
not, as is generally the case, by rack and pinion, but by a screw 
fitted to the under side of the stage on the left hand, which gives 
The prices of stands do not include any optical or mechanical parts beyond 
those enumerated in the above specification. Suitable combinations are com- 
piled at the end of the catalogue. 
