Abstract: A portable workdeck assembly is described as including a specially configured planar work surface on whose upper surface may be mounted a number of distinct bench mounted tools and related accessories, and whose lower surface carries user adjustable means enabling the deck assembly to be interfitted onto a plurality of variously sized and shaped supporting base members. The workdeck assembly therefore readily facilitates the portability of a set of familiar bench mounted tools and accessories to various sites. In a preferred baseline embodiment, one or more rigidifying channels longitudinally disposed on the work surface bottom carry a number of two-axis adjustable feet which enable the workdeck assembly to interfit snugly with variously sized rolling tool cabinets. In an alternate embodiment, a number of cross members with resilient feet are mounted on the work surface bottom enabling the workdeck to be non-slidingly positioned atop any suitably strong horizontally disposed base member.