Patent ID: 8225522
Filing Date: 2012-07-24
Classification: G01B

Abstract:
1. A measuring device for determining the shortest distance between features in a structure, said measuring device comprising: an elongate body member having a central axis; a measurement scale provided on said body member parallel to said central axis for providing measurements of distance along said central axis relative to a reference line perpendicular to said central axis; alignment means for capturing a first feature of a structure so as to centre said first feature on said reference line; a slide member slidably mounted on said body member for movement along said central axis; a reference surface provided on said slide member perpendicular to said central axis and arranged for engagement with a surface of a second feature of said structure; and indicator means provided on said slide member for indicating the distance between said reference line and said reference surface, so that when said first feature is centered by said alignment means on said reference line and said reference surface is engaged with said surface of a second feature, said indicator means indicates on said measurement scale the perpendicular distance between said surface of said second feature and said first feature.