Pearl CM-127, Инструкция по эксплуатации

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(4) Look through the eyepiece of the microscope and adjust the eyepiece until you can see the
eyepiece scale clearly. (CM-127 only)
(5) Turn the collimating lens adjustment ring left and right to find the middle of the range. Leave the
ring in that position.
* If the focal distance of the lens you want to measure is less than 100 mm, turning this ring to the
right may improve the accuracy.
* If the focal distance of the lens you want to measure is longer, turn this ring to the left.
Collimating lens
adjustment ring
Negative direction
Positive
direction