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2 2
d o w n w a r d , t u r n t h e rinn of t h e
stage
c o u n t e r c l o c k w i s e .
F a s t e n i n g o f t h e f l o a t i n g s t a g e
is necessary,
w h e n u s i n g a n
a t t a c h a b l e
m e c h a n i c a l
s t a g e
( F i g . 2 2 ) , w h i c h will be avail-
able o n order.
The
c i r c u l a r
r o t a t i n g
stage
t y p e G is also a v a i l a b l e , w h i c h
p e r m i t s
m e a s u r e m e n t
of t h e
r o t a t i n g
angle
o f
s p e c i m e n
w i t h its c i r c u l a r scale. ( F i g . 2 3 ) .
EXCHANGING T H E
OBJECTIVE NOSEPIECE
It
m a y
b e c o m e
necessary
t o
e x c h a n g e
t h e
o b j e c t i v e
nosepiece in s u c h a case w h e n
a series of p h a s e - c o n t r a s t or
m e t a l l u r g i c a l
objectives
are
m o u n t e d as a u n i t on t h e o t h e r
o b j e c t i v e n o s e p i e c e .
First,
unlock
t h e
revolver
lock screw, a n d draw o u t t h e
nosepiece in the d i r e c t i o n of the
a r r o w ( F i g . 2 4 ) .
In place, in-
sert t h e o t h e r nosepiece g e n t l y
u n t i l it s t o p s , m a k i n g t h e g u i d -
i n g s u r f a c e s
of t h e dove-tail
f i t parallel t o each other.
Fasten t h e revolver in p o s i t i o n
by m e a n s of t h e lock
screw
( F i g . 2 5 ) .
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PHOTOMICROGRAPHY
T h e M i c r o s c o p e Model L-Ke, i n c o r p o r a t i n g t h e Koehler i l l u m i n a t i o n device
w i t h l i g h t s o u r c e b u i l t in t h e m i c r o s c o p e
base, e n a b l e s c o n v e n i e n t a n d
p e r f e c t m i c r o p h o t o g r a p h only by additionally m o u n t i n g a c a m e r a c o n n e c t e d
t o t h e m i c r o s c o p e eyepiece w i t h a n y p h o t o m i c r o g r a p h i c
a d a p t e r .
T h e r e f o r e , w h e n t a k i n g p h o t o g r a p h s of t h e m i c r o s c o p i c i m a g e on 3 5 m m
f i l m , it is r e c o m m e n d e d t o use t h e N i k o n M i c r o f l e x M o d e l EFM (with b u i l t - i n
e x p o s u r e meter) or A F M (with built-in e x p o s u r e m e t e r p e r m i t t i n g a u t o m a t i c
e x p o s u r e setting) a n d t h e N i k o n F or N i k k o r m a t c a m e r a
or Nikon
Dark
Box f o r u s i n g w i t h t h e above a t t a c h m e n t s .
For details of p h o t o m i c r o g r a p h i c
m e t h o d s ,
refer t o t h e " I n s t r u c t i o n s of U s i n g
N i k o n
M i c r o f l e x
E F M " or
" A F M "
a n d a n y g e n e r a l w o r k s on p h o t o m i c r o g r a p h y .
- 2 2 —
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