Nikon Multizoom AZ100 Instruction Manual page 15

Focus on the Specimen (Continued)
Focusing Procedure
Focus on the specimen according to the following procedures.
1. Check the working distance of the objective.
The distance between the focal plane and the lower end of the objective is called "working distance."
Focusing will be easier by adjusting the distance between the specimen and the objective considering
the working distance.
Refer to "Attaching An Objective(s)" in page 20 for the working distance of each objective.
2. Focus on the specimen.
Rotate the focus knob on the zoom body to move the zoom body vertically and focus on the specimen.
Insert the hexagonal screwdriver into the hole on the ring and adjust the torque enough to prevent the
zoom body from descending with its own weight.
Operate the coarse focus knob for the coarse adjustment and the fine focus knob for the fine
adjustment.
Especially, the fine focus knob is useful for focusing on the specimen at a high magnification.
Chapter 3 Operation Procedures
13