Hmm. I have run into an interesting conundrum. Archer's official height is about 6'1. Rin's is about 5'3.

Yet in the CG where they're stood facing each other...

[img=http://lparchive.org/Fatestay-night/Update%20233/21-UBW16-10a-44.jpg]

So, go with the canon heights, or the CG's that tend to have him head and shoulders taller than the others? XD