You need something that will measure a bit finer than full inch increments…it’s something like 5’ x.nn’‘, with the ‘nn’ being less than 0.25, if I remember, correctly.
And the important thing…it’s not the total height, but the proportions are different.
There is also Fire Angel’s Measuring tool
I used this, even though it says it is for poser. in is to a 1cm scale which is what the Natural scale of DAZ Studio is.
Also it is accurate. easy way to check, place it in the scene, the do a X-position change of 100cm. and the 1m line will be at floor level.
Of course this only does vertical measurements
But there is also this interesting little jewel over at Renderosity, Universal Sizing Apparatus/Woman. It would be interesting to play with.
We we need is a good none conforming measuring tape.