BENCH MARK
Source: 567
Bench mark. (Leveling) Any permanent mark to which other levels may be referred. Specif. : A horizontal mark at the water's edge with reference to which the height of tides and floods may be measured.
Source: 567
Bench mark. (Leveling) Any permanent mark to which other levels may be referred. Specif. : A horizontal mark at the water's edge with reference to which the height of tides and floods may be measured.