Inverted ruler frame capable of adjusting observation position of leveling staff
The utility model relates to an inverted ruler frame capable of adjusting the observation position of a leveling staff. The inverted ruler frame comprises a main board, a fixation baffle, an adjustable baffle, a lantern ring and a high strength magnet. The main board is divided into a left disk and...
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Main Authors | , |
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Format | Patent |
Language | Chinese English |
Published |
13.08.2014
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Subjects | |
Online Access | Get full text |
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