Base mounting and Body
Base can be :
i) A mobile floor stand
ii) Fixed ceiling or wall mount
Mobile floor stand
Advantages
l They offer the ability to carry more weight
l They have longer reach and remove the problem of instability.
Disadvantages:
l Problem to maneuver in crowded operating rooms
l Stability problem increases with the use of heavy accessories and long extensions of the microscopes away from the base
l Wide based stands are more stable but difficult to move
Ceiling/Wall mount
Advantages
l Ceiling mount simplifies the introduction of instruments in the operative site
l Minimizes the floor clutter
l Microscope can also be mounted on a motorized track on the ceiling allowing the easy positioning of the scope
Disadvantages
l Expensive
l Ceiling vibrations could be a problem if not certified before installation
Body:-
Two basic types
1)Manual type
11)Zoom type
-Manual type features fixed magnification steps and manual focus of 0.4,0.6,1.0,1.6 and 2.5 x
-Zoom type has stepleess magnification varying from 1:4,1:5 or 1:6
Advantages:
l Precise magnification can be selected
This is ceiling mount 
l Can continuously monitor whole operation at low magnification and complete the detailed work at high magnification
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