Foundation pit horizontal safety distance measuring device and using method

The invention relates to a foundation pit horizontal safety distance measuring device which comprises a dial, a pointer, a rotating shaft, a vertical steel ruler, a transverse steel ruler, a pointer fixing knob and an adjustable fixing clamping groove, and is characterized in that the fan is fan-sha...

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Bibliographic Details
Main Authors YANG HUI, DU MINGKAN
Format Patent
LanguageChinese
English
Published 18.12.2020
Subjects
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
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