11across The first of the scouts with inferior track 5letters S???R
22across What a ruler will produce is certain fellows in the flesh 11letters ?????R?M?N?
21across Kind of shaft arrived unfinished 3letters C??
When I was at junior school, our teacher drummed it into us that a king was a ruler and the measuring device was a rule. Maybe this is the exception to the rule!
But isn't a "RULE" the period of time in which a king is in office? (As in the "rule of King Alfred")
Also the "Rule of St. Benedict" would be difficult to use for measuring lengths!