Patent ID: 7733080
Filing Date: 2010-06-08
Classification: G01R

Abstract:
1. A clamp meter, comprising: a body member having a display panel; a jaw member; and a revolving member joining said body and jaw members together, said revolving member having a first base located on said body member, a second base located on said jaw member, and an axle extended axially from said body member into said jaw member via a first axle hole of said first base and a second axle hole of said second base so that said body and jaw members are capable of revolving relative to each other; wherein at least a roller ball is embedded in a concave on said first base around said first axle hole; said roller ball is elastically supported by a spring inside said concave so that said roller ball is raised towards said second base or suppressed entirely into said concave; a plurality of notches are provided on said second base around said second axle hole; said notches are positioned such that, as said body member and said jaw member are rotated relative to each other, said roller ball rolls into one of said notches, thereby creating a number of preset configurations of the included angle between said body and jaw members.