Complex sentence: He measured the whole lordship of Elmton, consisting of some thousand acres (4 km²), simply by striding over it, and gave the area not only in acres, roods and perches, but even in square inches.
Split into simpler sentences: He measured the lands of Elmton, consisting of some thousand acres (4 km²), simply by striding over it. He gave the area not only in acres, roods and perches, but even in square inches.