WPI PIMT201, Instruction Manual

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26 World Precision Instruments
Focus Tensioning Adjustments
The tension on the focus knob can be adjusted (if desired) by using the tension
adjustment tool that came in the spare parts and tool kit with the microscope.
NOTE : The phase telescope comes with spare fuses, a spare bulb and a tool kit ( Fig.
80 ).
Fig. 80—Spare parts and tool kit
1. Locate the tiny notch on the back side of the tension knob and insert the tip of
the tension adjustment tool in the notch ( Fig. 81 ).
2. Rotate the tool clockwise to tighten the tension or counter-clockwise to loosen it
( Fig. 82 ).
Fig. 81—Tension Adjustment Tool installed
Fig. 82—Rotate Tension Adjustment Tool