Feature

●Increase an Objectives Parfocal Length by 6.5mm 15 mm per Extender.
●Stackable Design Matches Multiple Industry-Standard Parfocal Lengths Versions Available with M25 thread (M25X0.75).
●Microscope moveable stage is made of high quality plastic and metal, long serving life.
●It is a microscope accessories, great replacement for the broken one.
●We find this sophisticated and sturdy binocular compound microscope is very conducive to students education in high school and university.

[6.5mm]

Description

Note:
Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering!