Abstract: A well-logging laboratory, for use with a well-logging tool which is suspended within a borehole by a wireline, includes a moveable frame upon which the wireless drum is mounted, and a moveable bulkhead is associated with the frame and various well-logging apparatus can be secured to the bulkhead, whereby the frame and bulkhead may be assembled as a modular unit, and moved within the well-logging laboratory as a modular unit.