We address the problem of the continuum limit for a system of Hausdorf
f lattices (namely lattices of isolated points) approximating a topolo
gical space M. The correct framework is that of projective systems. Th
e projective limit is a universal space from which M can be recovered
as a quotient. We dualize the construction to approximate the algebra
C(M) of continuous functions on M. In a companion paper we shall exten
d this analysis to systems of noncommutative lattices (non-Hausdorff l
attices).