Feature

●Brand new focus rack with ball bearing
●Focus gear with coarse focus and tension adjustment
●Diameter of annular ring holding microscope head: 3" (76mm)
●Diameter of opening for stand post (arbor): 1-1/4" (25mm)
●An essential microscope accessory . is a practical accessory, easy to install.


Description

Note:
Please allow 1-3cm error due to manual measurement. Thanks for your understanding.