baffler puzzle help

printing measures are ens or ems

As for the others, please let us know the # of letters and any letters and their positions that you've already got. E. g. something like ??ba??

A lot of us like to help but we don't get the magazines. Thanks!

In situ - As is
UK socialist club member - Fabian

A joke has it that the chant at a Fabian Society meeting would be 'What Do We Want? GRADUAL CHANGE! When Do We Want It? IN DUE COURSE!"

Oh contrex you are a wag.