16
Fig. 18
Fig. 19
Fig. 20
5-2 Focusing Block
1
Focusing Controls
The focusing block consists of the controls listed in the following table,
which also describes the functions of the controls.
No.
Name
Function
1
Coarse adjustment
knob
Moves the focus position widely.
2
Fine adjustment dial Fine adjusts the focus position.
3
Fine adjustment
knob
Fine adjusts the focus position.
This knob can be attached to the fine
adjustment dial on either the left or right
side. (When the microscope is shipped,
it is attached to the right-side dial.)
4
Pre-focusing lever
Sets the upper limit of the stage position
(to prevent contact between the speci-
men and objective).
5
Tension adjustment
ring
Adjusts the force required to rotate the
coarse adjustment knob.
2
Adjusting the Focus
With both the coarse adjustment knob @ and fine adjustment knob
2
,
rotating the knob in the direction of the arrow raises the stage (lets the
specimen approach the objective).
1
2
5
1
3
4
1
2
