Topographic bench mark

Details Topographic bench mark Topographic bench mark

1977-04-15

1979-03-20

Purser, Ernest R.

Static structures (e.g., buildings)

Land marker or monument

109 51, L01F 902

Patent

active

041446828

ABSTRACT:
A topographic bench mark unit comprises a case which defines internally a space accessible through a movable lid. The case is mounted on a support. A bench mark member is integral with the case within the space. Provision is made for mounting a topographic member in a predetermined position in relation to the bench mark point, with a view to producing measurements referring to this point, and means for identifying the bench mark point. The unit has application both to immovable altimetric and geodetic bench marks.

REFERENCES:
patent: 384855 (1888-06-01), Kidney
patent: 427394 (1890-05-01), Brown
patent: 727105 (1903-05-01), Dodson
patent: 2038962 (1936-04-01), Schulthess
patent: 2624307 (1953-01-01), Caffrey
patent: 2674353 (1954-04-01), Foote
patent: 3503163 (1970-03-01), Lutz
patent: 3561317 (1971-02-01), Rowell
patent: 3587486 (1971-06-01), Henrichs
patent: 4029370 (1977-06-01), Ziegel

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