Improved tape measure apparatus with a rotating and sliding catch
作者： Paul Ricalde
DOI:
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摘要: An improved tape measure apparatus which includes a catch that is both slidable and rotatable relative to the rule blade in plane perpendicular longitudinal axis of when extended from casing. In one embodiment can rotate slide frictional forces exceed predefined minimum or are within range.
lens.org 参考文章(3)
Emanuel Lungu, Pavel Lungu, Tape measure with rotating tape catch ,(2008)
Henry Lin, Structure of a tip hook of a tape rule ,(2002)
Paul Ricalde, Tape measure apparatus which can be used as a marking gauge and/or compass ,(2003)