Abstract: A coordinate transformer that includes foldable horizontal and vertical members utilizes GPS provided map coordinates to assist with location determination on a handheld map. Typically, GPS receivers provide accurate location information but their display size, memory and battery life prohibit the amount of topographic information that can be displayed in context, to a user. Through the use of the coordinate transformer, an ambulatory user is provided with an accurate location indication displayed within the context of a large portion of an actual topographic map, and the user is also able to determine the coordinates of a location of interest on the map for transfer to an internal or external unit.

Abstract: A coordinate transformer that includes foldable horizontal and vertical members utilizes GPS provided map coordinates to assist with location determination on a handheld map. Typically, GPS receivers provide accurate location information but their display size, memory and battery life prohibit the amount of topographic information that can be displayed in context, to a user. Through the use of the coordinate transformer, an ambulatory user is provided with an accurate location indication displayed within the context of a large portion of an actual topographic map, and the user is also able to determine the coordinates of a location of interest on the map for transfer to an internal or external unit.

Abstract: A lightweight, collapsible compact platform for use by hikers and backpackers includes a supporting surface having horizontal adjustability. The platform can be conveniently folded into a compact carrying unit less than 6 ounces in weight and having a fold down or compactability ratio of at least approximately 25 to 1. The supporting surface cooperates with vertical legs that can be adjusted to provide a level supporting surface irrespective of the slope of the underlying ground surface.

Abstract: An improved backpack frame is provided with an upper section adapted to be selectively and adjustably pivoted about a lower section allowing the weight of the upper section to counterbalance the weight of the lower section so that the center of gravity of the pack load is substantially over the hip line of the bearer. Positioning of the weight load over the hip line provides the backpack frame bearer with a less tiring and more comfortable means of bearing heavy loads. The upper section pivots about an axis just above and parallel with the shoulders of the bearer and contains a clearance for the head to allow forward positioning. The amount of pivoting is controlled by the backpack frame bearer in accordance with the terrain and conditions being traversed, and a pivot hinge and slide mechanism allow easy underway adjustment. The lower backpack section is fitted to the body from the shoulders to the waist by a harness.