Movable sighting board for river-crossing leveling

The utility model discloses a movable sighting board for river-crossing leveling, and belongs to the field of engineering surveying. According to the movable sighting board for river-crossing leveling, a ruler body is arranged in a sighting board body, reading windows are arranged on the front end f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MA SHENGFU, CHEN SHUXIA, RUAN XIUCAI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF GYROSCOPIC INSTRUMENTS HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS MECHANICAL ENGINEERING NAVIGATION NON-PORTABLE LIGHTING DEVICES PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SURVEYING SYSTEMS THEREOF TESTING VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses a movable sighting board for river-crossing leveling, and belongs to the field of engineering surveying. According to the movable sighting board for river-crossing leveling, a ruler body is arranged in a sighting board body, reading windows are arranged on the front end face and the rear end face of the sighting board body respectively, and reading metal wires are arranged on the sides, close to the ruler body, of the reading windows and located on the front face and the back face of the ruler body respectively. And eight gears are arranged in the sighting board body. The utility model solves the problems that the leveling measurement is inconvenient and the work cannot be smoothly carried out because the horizontal line of the middle thread of a common 3m terrain leveling rod sometimes exceeds 2m for a rod erecting person and the rod erecting person cannot move the sighting board to a position which is much higher than the height of the rod erecting person in the existing river-cr