1. One of a number of marks along a line of survey, affixed to permanent objects, to show where leveling staffs were placed.
2. Any standard by which variations or performance may be tested.
1. A standard by which something can be measured or judged
2. A surveyor's mark on a permanent object of predetermined position and elevation used as a reference point; SYN. bench mark. bench mark + prikaži više

An indicator that orients one generally; SYN. point of reference, reference.