Just did some digging and found these: http://www.daviesmolding.com/Catalog/Series/Knobs/Control.aspx?KnobType=&KnobDiameter;=&MountingDiameter;=&MountingType;=&MaterialType;=&SeriesID=1470

They look exactly like the knobs I’m looking for. I guess my question now is will these simply fit right on my DMM? Thanks.