Abstract: A pneumatically powered test fixture for bracing, holding and/or handling solid, bulky objects such as gas meters or the like. The fixture readily permits service or repairs and renders meters readily accessible and easily maneuverable. A rigid frame is adapted to be secured to a stable workbench or support, and an optional support plate may couple the frame to the support surface. A rigid mounting spacer secured to the frame mounts a pneumatically powered trunnion. When an optional frame mounting plate is omitted, the trunnion mounting spacer will be affixed directly to the workbench. A rigid, U-shaped cradle captivates a meter to be repaired or serviced. The cradle is rotatably suspended above the supporting surface by the trunnion, and the cradle can be manually rotated into a variety of user-selectable positions to readily expose all structural portions of the meter.