Abstract: Methods and structures are disclosed for establishing a positioning reference frame for a work surface having one or more hidden features (such as studs) where the hidden features are detectable by way of machine-aided sensing. One method geometry, proximate to the surface, so that one or more of the hidden features can be detected and located with machine-aided sensing. One or more sensor modules are attached to the guiding frame and at least a first of the sensor modules is movable along the guiding frame. The first sensor module provides machine-aided sensing of at least a corresponding first of the hidden features. The first sensor module and/or guiding frame are moved relative to one another so that the relatively moved components become aligned to the first hidden feature according to a desired orientation.

Abstract: A tool-carrying assembly to be secured by a waist-encircling belt, and, additionally, by straps encircling the legs of a workman using the belt assembly. The assembly is thus stabilized, and enhanced weight distribution is achieved. Elements of the belt assembly include a waist-encircling band supporting a pair of laterally spaced, depending panels each carrying tool-accepting pockets. The pockets preferably carry visual markings and coding as well as other indicia identifying clearly the specific tools to be “housed” or carried in and to be returned to each pocket after use. Inventory control of the tools is thereby significantly enhanced. Pivotal flaps depending from the band-carried panels serve to cover the tools when not in use, and to prevent the tools from scratching or otherwise marring any article, or fixture, or “workpiece” requiring the workman's attention.

Abstract: A tool-carrying assembly to be secured by a waist-encircking belt, and, additionally, by straps encircling the legs of a workman using the belt assembly. The assembly is thus stabilized, and enhanced weight distribution is achieved. Elements of the belt assembly include a waist-encircling band supporting a pair of laterally spaced, depending panels each carrying tool-accepting pockets. The pockets preferably carry visual markings and coding as well as other indicia identifying clearly the specific tools to be “housed” or carried in and to be returned to each pocket after use. Inventory control of the tools is thereby significantly enhanced. Pivotal flaps depending from the band-carried panels serve to cover the tools when not in use, and to prevent the tools from scratching or otherwise marring any article, or fixture, or “workpiece” requiring the workman's attention.

Abstract: Disclosed is a ratchet wrench having a drive head and a handle, the latter defining an elongate body. The body of the wrench is formed with a series of through cavities which are sized in steps for releasibly holding a series of correspondingly sized sockets. The sockets are retained in place frictionally by means of elastomeric inserts carried by and positioned to project inwardly of exposed annular side walls which define the cavities. Conveniently, the stored sockets may be forcibly expelled from the cavities in either of two opposed axial directions. For ready visual identification, markings are provided on the body of the wrench indicating the specific size of each socket-receiving cavity. The described features of the ratchet wrench also enable one quickly to verify the socket size, and allow socket placement over a fastener without requiring that the socket itself be first removed from the tool handle.