SYSTEM FOR MEASURING A CHANGING CRACK IN A WALL OR THE LIKE
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United States of America Patent
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Issued Date -
Dec 21, 2023
app pub date -
Sep 28, 2021
filing date -
Sep 30, 2020
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Abstract
A system for measuring a changing crack, comprises: a measurement device comprising a body bearing a measurement instrument and having a first positioning means, and a movable member comprising a second positioning means; at least two targets that are able to cooperate with a positioning means, wherein the at least two targets are hemispherical in shape and wherein the positioning means consist of rings having a cross section that is smaller than the base section of the target.
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