The
Cropico certainly looks a bit handier ... and is apparently available from RS (and Farnell).

I must admit that, like Mike, I was wondering why you're being called upon to make those measurements, Dave.
OK - because they are called for in the Standard, I guess; I wonder what "they" base all that on?
BTW, I have noticed on other forums* that electricians (as opposed to biomeds) are well provided with a vast range of measuring instruments. Some of those blokes can get very er,
anal about the intricacies and
minutiae of this and that testing circuit
etc.; as well as discussions (arguments) about the relative merits of each method. So perhaps it would be better to leave all this "building services" stuff to them.

*
And yes, the Fluke 1652-C gets mentioned (indeed praised) a great deal.