| 摘要 |
An alignment apparatus includes a central leg element and one or more secondary support leg elements in operative communication with the central leg element for providing support thereto. A sighting device rotatably attached to the central leg element includes an optical device having at least one optical element therein for permitting a user to view an area of interest in the direction of an optical device axis of sight and a laser-emitting device for emitting a laser beam along a laser axis of projection. The laser axis of projection is parallel to the optical device axis of sight. A method of aligning an underground structure is also disclosed.
|
