Simple and easy wall crack monitoring devices

The utility model provides a simple and easy wall crack monitoring devices, include: the both sides at wall crack are arranged respectively to two fixed disks to it is fixed to hug closely the wall, two rotation axises are respectively and are fixed in perpendicularily two fixed disk middle parts al...

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Bibliographische Detailangaben
Hauptverfasser:	WU ZENGKUAN, LUO YONG, ZHAO LONG, LEI KUNCHAO, ZHOU YI, OU ZHILIANG, ZHOU TAO, QI MINGHUAN, SHA TE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING
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