Thanks Hood,
        I set the G21 on the General Config as you suggested and all is fine. The program now remembers that it is to work in metrics.
THANK YOU!!!   I had looked at that page 20 times but just didn't see that setting!!
There are just so many options in Mach its no surprise you missed some
 What do you make Hood???Â
Scrap usually
Most of my work is repairing fishing boats, welding and machining but I also do a bit of prototype work for a company that makes magnetic detecting devices for Shell, BP, Exon etc.
Hood