Vacant Star Density Mapper

Vacant Star Density Mapper is a two-handed mapper that combines gravitic, acoustic, and inertial readings into a coarse volume model of cargo, machinery, or rock. It finds hidden compartments because empty space has weight too—or rather, conspicuously does not. The operator must circle the target and mark stable reference points; using it from one angle makes confident nonsense. Maps preserve mass distribution well enough to reveal proprietary machinery layouts. It runs cold and almost silent, then stores every fault in an encrypted service ledger. That ledger helps honest repairs and gives customs inspectors a tidy history of everywhere the unit has been.