This flange adapter from 10 Micron allows for the use of 3 different dovetail clamping plates on the GM4000 mount, including:
- #10M2135 - Maxi 4" Clamping Plate
- #10M2085 - 3" Losmandy Clamping Plate
- #10M2185 - 3" Losmandy Clamping Plate XL
Although it should be possible to accommodate the plates directly on the top of the GM4000 mount, due to the low profile of the clamping plates it is strongly recommended to use the flange adapter in order to operate the plate's knobs with enough clearance.