A Heechee device which strengthens the bonds between molecules. Its field flows through matter up to a three meter radius. Inside the field, matter becomes impervious; even affected liquids can be hardened as stones. In conjunction with the Gravity Lens, it protects a ship against the immense gravity tides of the Black Hole.
A module would fit in the palm of a human hand. They are not common, used almost exclusively on spacecraft or in Archaeological emergencies, where a field would save a cracked artifact from further degradation or support a wall until reinforced.