Electronic level and leveling rod for use in electronic level
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 30, 1999
Grant Date -
N/A
app pub date -
Apr 10, 1997
filing date -
Jul 24, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In automatically obtaining a height h of a collimated position by collimating a leveling rod 1 to which bar marks 11 are attached, if the height h is obtained by an image pattern of the leveling rod 1, the size of the image pattern of the leveling rod 1 must be corrected inside an electronic level 2 depending on the distance between the leveling rod 1 and the electronic level 2. A long time is required for the computation processing for this correction. In this invention, on the other hand, the ratios of the distances between respectively adjoining bar marks 11 are obtained and the height h is obtained from the manner in which the ratios are arrayed.
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