I use adjustable machine feet (round base with an M12 thread and nuts), available commercially, to set the machine level. The castors are fixed on a retractable base, cam operated by your foot, so the castors can be lowered and the machine moved, then retracted when in position. The level does need to be checked after every move.
This is particularly useful on my universal woodworking machine, where the space needs vary according to the job, but also works on the Myford and surface grinder. Not good for the shaper, as it walks off down the garage!
This type of base is available from woodworking suppliers, but is expensive.
Sorry Dias, your pictures didn’t show up on my PC.
Edited By Robbo on 22/08/2009 10:23:59
Edited By Robbo on 22/08/2009 10:24:32