Leica Biosystems M80 B - Manual (Page 31)

Leica M series User Manual 31
Adjusting the Resistance of the Focus Drive
Adjusting the resistance
Is the focusing drive too loose or too tight?
Does the equipment tend to slide downwards?
The resistance can be adjusted individually
depending on the equipment weight and
personal preferences as follows:
1. Grip the outer drive knobs with both hands
and turn them towards each other until the
desired resistance is reached during focus-
ing.