Abstract: A readily transportable device of relative light weight comprising a pair of tensioned guides for providing accurate and stable reference planes. An embodiment comprises a pair of rods or guides in tension between a pair of end members, the end members being spaced apart by a compression member. The tensioned guides provide planes of reference for measuring devices moved therealong adjacent a component to be measured. The device is especially useful for making on-site dimensional measurements of components, such as irradiated and therefore radioactive components, that cannot readily be transported to an inspection laboratory.

Abstract: Remotely manipulatable probe and apparatus for positioning a corrosion thickness sensing transducer over selected areas of the internal surface of a tubular radioactive component submerged in a pool of water for radiation shielding.