Connecting cone facilitates adjustmenrt of the adapter. The cut-off side clears the edge of the optics for working with a beam very closely situated to another beam.
Optics is firmly clutched by a stainless steel fixing screw and rests against the two contact lines formed at the cut-off side. The adapter is suitable for optical elements up to Ø50 mm (2 inch).
Note: for optics Ø20÷25.4mm adapter 840-0100-A3 is used.