20
ASSEMBLY PROCEDURE
COUNTER BALANCING THE VERTICAL MOVEMENT
When accessories, including the TV relay lens, are fitted to the main body, the vertical counter-bal-
ance movement may need to be adjusted. To correct this, auxiliary springs must be fitted.
Major Combinations of Accessories and Necessary Auxiliary Springs
Each auxiliary spring consists of 2 identical springs.
Do not use different springs in a set.
Accessories
Auxiliary Spring type
Tonometer is
not fitted
Tonometer is
fitted
TV relay lens TL-55 + SONY DXC-33 (DXC-390) –––
Standard
auxiliary
spring
Beam splitter + Observation tube
Standard
auxiliary
spring
Auxiliary
spring
SO-AS1
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