Focusing Device - Nikon ECLIPSE TS100 Instructions Manual

4
Using large containers
When using oblong containers, more stable
observations are possible by attaching a sub-stage
to the sides of the stage. (For details on attaching
the sub-stage, see P.37.)
When using a large, thick container, remove the
condenser and place the container on the stage.
Note that only simple bright-field microscopy is
possible while the condenser is removed.
Before placing a large container on the stage, check
that the tip of the objective does not stick out
beyond the top surface of the stage.

Focusing Device

3
The arrows in the figure show the directions in
which you rotate the focus knob to move the
objectives.
The following shows the relationship between
rotation of the knobs and movement of objective:
One scale division on the fine focus knob gives
2 μm of objective movement.
One rotation of the fine focus knob gives 0.2
mm of objective movement.
One-tenth rotation of the coarse focus knob
gives 3.8 mm of objective movement.
The coarse/fine focus knobs provide a 7-mm
upward stroke and 3-mm downward stroke from
the reference position.
The torque of the coarse focus knob can be
changed by turning the coarse torque adjustment
ring located at the base of the coarse focus knob on
the right. Turning this adjustment ring
counterclockwise increases the torque, while
turning it clockwise decreases the torque. The
torque of the coarse focus knob is pre-adjusted at
the factory, but can be adjusted to taste by the
user. Take care not to over-loosen the torque so
that the revolving nosepiece does not fall of its own
weight.
Do not rotate the right and left focus knobs in
opposite directions at the same time or continue
turning the coarse focus knob after the stage has
reached the limit of its motion as this may result in
damage to the equipment.
4 Operation of Each Part
3 Focusing Device
E-25
Remove the condenser for
observations when using a large container.
Decreases torque
Increases torque
Coarse torque adjustment ring
Sub-stage