We compare the perturbatively calculated QCD potential to that obtained from lattice calculations in the theory without light quark flavours. We examine E_(tot)(r) = 2m_(pole) + V_(QCD)(r) by re-expressing it in the MS mass m-bar ≡ m~(MS) (m~(MS)) and by choosing specific prescriptions for fixing the scale μ (dependent on r and m-bar). By adjusting m-bar so as to maximise the range of convergence, we show that perturbative and lattice calculations agree up to 3r_0 approx.= 7.5 GeV~(-1) (r_0 is the Sommer scale) within the uncertainty of order A_(QCD)~3 r~2.
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