Scale coupling system

Abstract

A collection of couplers and a corresponding coupling method that removably connect existing forensic scales to create a coupled scale, wherein a ruler arm of each scale is slidingly engaged in a track of the coupler that provides and maintains arm-to-arm angular accuracy for scales coupled in a fixed angle, co-planar joint, and measurement accuracy of scale markings across the joint. The track includes a lower surface; two laterally opposed parallel edge walls extending up from the lower surface and spaced apart by a dimension suitable for slidingly engaging a ruler arm width; holding tabs that extend laterally inward from both edge walls spaced above the lower surface by a dimension suitable for slidingly engaging a ruler arm thickness; an open end; and preferably a longitudinally distal registration stop. Two coupler tracks are joined with co-planar lower surfaces; and an edge wall of each joined at a fixed angle vertex.