Leica Biosystems M165 C B - Manual (Page 17)

Leica M series User Manual 17
Leica engineers were careful to ensure that the
new Leica M series—like its predecessors—
remains compatible with existing series. This
means that objectives, bases, tubes and so on
can be reused.
Objectives
All new objectives of the Leica M series are
parfocal.
If you prefer, you can continue to use the previ-
ous Leica objective series. In this case, parfocal-
ity is no longer guaranteed.
Tubes
The interface between the optics carrier and
the tube has remained the same, so exist-
ing tubes fit the new M series. The new tubes
are designed for eyepieces with field number
23, while the predecessor models were only
designed for field number 21, resulting in a
smaller object field.
Eyepieces
The new M series eyepieces have an audible
and tangible click to provide immediate feed-
back in case of accidental adjustment.
Maximum Compatibility