Overview
This patented system describes a precision angle- and proportion-finding tool designed to help artists, architects, and craftspeople reproduce angles and spatial relationships from real-world subjects onto a transfer medium. Filed in November 2011 and granted on June 17, 2014, the patent protects a view window containing a pair of adjustable reticles whose intersection defines a cross-point. Inventors based in Amarillo, TX developed a compact, one-handed design that uses rotatable disks and selectable friction rings to lock reticle positions, enabling users to align the cross-point with a vertex in the scene, rotate the reticles to match the observed angle, and then transfer that aligned angle directly onto a canvas or other medium. The specification also covers using the device as a proportion finder by establishing plumb and horizontal reference lines, forming reference triangles, and rescaling by shifting vertex placement.
The firm’s drafting emphasizes practical details—disk access cuts, transparent panes for embedded fibers or engraved lines, and spacer/fastener assemblies—ensuring broad claim scope and manufacturability while addressing prior-art limits tied to computer displays or numeric scales.
Key Features
- View window with intersecting adjustable reticles for direct visual alignment
- Rotatable disks with friction rings for stable, one-handed operation
- Transfer method for marking angles and proportional reference lines
- Proportion-rescaling via movable vertex on a plumb line
By enabling reliable angle capture and proportional transfer, this invention bridges traditional artistic technique and precision measurement, with applications in fine arts, drafting, and field surveying.
Granted: 2014-06-17
