Anything between 1mH and 10m can either be displayed as 1000uH to 10000uH or as 1mH to 10mH, but above 10mH I would expect the meter to show mH.
With the SI prefix* you do not really expect values below 1, they use the next lower prefix, between 1 and 10 it is more or less optional (Depending on who you ask) if you use the lower prefix or the current prefix, above 10 you always use the current prefix.
*Why is it called prefix when it is after the number: It is because it is a addition to the unit, i.e. H has a prefix of m or u.