Lehner does state that "Despite the irregularities on the surface of
Area C, the excavations revealed a remarkably
consistent pattern in the architecture of the
galleries."

But not like a calibrated ruler. They are galleries.

"The interior dimensions of the galleries are
fairly consistent, with widths ranging from 2.5
to 3.0 m at the floor, and an average width of
about 2.7 meters. The narrower galleries tend
to be in the northern half of the whole set, while
the wider galleries are generally in the southern
or central part of the set. The entrances to the
galleries are slightly constricted with widths ranging
from 2.0 to 2.25 m." p9 of the pdf

Does that sound like a ruler to you? What do you measure with it?
Your drawing is misleading because it shows lines (not galleries) indicating precise mathematical calibrations. A ruler is an instrument not a series of rooms or galleries of varying size.

We don't even know how long it is or how many galleries may remain.

"On the basis of our walking survey and sketch
map we numbered the galleries starting on the
south of the main row of the E-W oriented galleries.
Later, survey identified two more likely
galleries south of our number 1; and perhaps
still more galleries exist farther south under
the modern asphalt road and beyond. The two
galleries south of our number 1 were therefore
designated as -1 and -2. Figure 3 represents
the original position of the complex of galleries
on the basis of the features that we mapped
for individual excavation units. While we surveyed
walls suggesting the presence of fifteen or
sixteen galleries extending southward from the
northern closure wall (fig. 2), there could be
more under the modern road which cuts across
the NE corner of the enclosure." p7