Abstract: A framing jig for building various configurations of wall sections, roof trusses and similar structural components in building construction. In one embodiment, two or more ganged cradle assemblies are provided with spaced cradles for supporting building studs in a spaced transverse configuration. Each set of ganged cradle assemblies may be set for a characteristic spacing distance. In an alternative embodiment, one set of ganged cradle assemblies is provided with means for extending alternate cradles so that staggered stud double walls may be constructed. By providing jig stops along transverse structural members, roof trusses may be constructed using the same framing jig on which building walls may be constructed. In a further embodiment, the framing jig may be deployed in a portable configuration combined with a sawing station and other supporting equipment for a fulling integrated on-sight fabrication facility.