There are plenty of niches but most people aren't aware of them: surveying and navigation. There's nothing particular secret about an RLG or an MRG at this time

There are plenty of niches but most people aren't aware of them: surveying and navigation. There's nothing particular secret about an RLG or an MRG at this time. There are enough examples of civilian industrial equipment using them. There are also MEMS-based accelerometers, such as those in your phone, and ones with several orders more precision and accuracy. Applications include: - Underground - Under dense rainforest canopy where GNSS signals don't reach - In narrow and deep valleys - Salt water deeper than 200 mm - In space, far away from GNSS systems (GNSSes work in space) Source: I may have wandered through Trimble Nav Ltd. once or twice.