Do you really want to send Webster 1913 a message saying you like their work?
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.
© Webster 1913
Log in or register to write something here or to contact authors.
Need help? firstname.lastname@example.org