Surveying rod leveling device

Details Surveying rod leveling device Surveying rod leveling device

1991-04-19

1992-01-07

Haroian, Harry N.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

73 1E, 73384, 73295, G01C 2500

Patent

active

050779060

ABSTRACT:
A surveying rod leveling device and method for checking the accuracy of the level attached to the surveying rod comprising an elongated vertical bracket mounted to a vertical surface, having a movable joint at the top of the bracket and an adjustable horizontal plate with a center point at the bottom of the bracket. A plumb line and bob hangs from the movable joint. The center point of the adjustable bottom plate is aligned with the point of the plumb bob and the bottom plate is secured in place. The center point is removed from an aperture is the adjustable horizontal plate and the surveying rod is inserted into the same aperture. The upper end of the rod is secured to the joint at the top plate. The rod is thus held plumb and the level attached to the rod may be adjusted to produce an accurate reading.

REFERENCES:
patent: 1912536 (1933-06-01), Mobley
patent: 4617820 (1986-10-01), Hammond
patent: 4879816 (1989-11-01), Sierk

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