Circular inspection well aperture measuring device

The utility model discloses a circular inspection well aperture measuring device. The circular inspection well aperture measuring device comprises a cross-shaped fixing rod, four fixing joints, four positioning rods, a first measuring rod and a second measuring rod. According to the circular inspect...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: FANG SANLING, CHEN HUA, CHEN MUPING, FAN CUNLE, DENG CHAOJUN, HOU SONG
Format: Patent
Sprache:chi ; eng
Schlagworte:
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