40 
Marks 
Stand IV*. inclinable, without clamping lever. Fixed 
stage, 90X90 mm {^'I^X ^Va")- 
Coarse and fine adjustments as above. 
Abbe illuminating apparatus No. 17 with condenser 
system of 1.20 num. apert. Cylinder diaphragm to tit in place of 
the condenser (M. 7. — ). Without iris and cylinder diaphragms, 
which, however, may be added at an extra charge of M. 15. — 
and M. 7. — respectively, at any time (fig. S) 
Stand IV^ similar to IV^ but without illuminating 
apparatus. This is replaced by the ordinary plane and concave 
mirror with universal motions and the ordinary cylinder dia- 
phragm which is fixed to the under surface of the stage by a 
bayonet joint. This arrangement permits of a rapid interchange 
of the diaphragm for the simplified Abbe illuminator No. 18, price 
M. 40. — (condenser system of 1.20 num. apert. with fixed iris 
diaphragm) 
Stand IV^ inch illuminating apparatus No. 18 
The prices of stands do not include any optical or mechanical parts heyond 
those enumerated in the above specification. Siiitahlc combinations are com- 
piled at the end of the catalogue. 
