The "MicHel" helical microfocuser helps to adjust focus very precisely. It takes 1,25" equipment and has a positive T2 thread, and on the scope side a Vixen 36,4mm positive thread. There is an optional adapter MicHelT2 to covert it to T2. Attached equipment does not rotate when adjusting the helical.  Height is minimum 44mm (without connecting Vixen thread), travel is 10mm, precision about 0,05mm With MicHelT2 adapter connected, min height is 55mm and max. 67mm, weight inclusive adapter is 103g. Dont forget to order along the MicHelT2 if you need it!