Abstract: A width-adjustable support stand has two leg pairs, each composed of two legs interconnected by a length-adjustable cross-rail. Each cross-rail features a pair of rail stubs that are attached to inner sides of the two legs and are telescopically received in hollow cavities of a rail hub at opposing ends thereof. Each rail stub has a pair of slide guides engaged with corresponding slide guides on opposing internal walls of the respective hollow cavity, and also has upper and lower tongues riding in top and bottom slots of the rail hub between in-turned flanges thereof. To lock each leg pair at user-selected width, a lock slot in each rail stub is penetrated by a lock fastener that engages opposing sidewalls of the rail hub on opposite sides of the rail stub, so that tightening of the fastener clamps the rail stub firmly between the sidewalls of the rail hub.

Abstract: A width-adjustable support stand has two leg pairs, each composed of two legs interconnected by a length-adjustable cross-rail. Each cross-rail features a pair of rail stubs that are attached to inner sides of the two legs and are telescopically received in hollow cavities of a rail hub at opposing ends thereof. Each rail stub has a pair of slide guides engaged with corresponding slide guides on opposing internal walls of the respective hollow cavity, and also has upper and lower tongues riding in top and bottom slots of the rail hub between in-turned flanges thereof. To lock each leg pair at user-selected width, a lock slot in each rail stub is penetrated by a lock fastener that engages opposing sidewalls of the rail hub on opposite sides of the rail stub, so that tightening of the fastener clamps the rail stub firmly between the sidewalls of the rail hub.