title: The Brown-Roberts-Wells (BRW) arc: its concept as a spatial navigation system.
abstract: The Brown-Roberts-Wells (BRW) Arc System can be compared to spatial navigation because both utilize the concept of direction to and spatial location of a point in space by referencing to a horizontal angle (azimuth) and a vertical angle (declination) relative to the horizon. The BRW system also permits the determination of the distance from a reference surface of the arc system to the point (target). The methods of determining these parameters are explained in detail with illustrations.
authors.affiliation: Trentwells, Inc., South Gate, Calif.
authors.forename: T H
authors.initials: TH
authors.lastname: Wells
authors.forename: E R
authors.initials: ER
authors.lastname: Cosman
authors.forename: R E
authors.initials: RE
authors.lastname: Ball
mesh_terms: D004867:Equipment Design; D006801:Humans; D013238:Stereotaxic Techniques