Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels (G01C3/20, G01C3/30 take precedence)

Child Classifications

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• G01C 5/005
• G01C 5/02 involving automatic stabilisation of the line of sight
• G01C 5/04 Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points
• G01C 5/06 by using barometric means