The REM (Rapid Elevation Meter) was developed by DSS in 1989 and has been used extensively on seismic projects throughout scrubby areas of Australia.

The system consists of a digi-quartz barometer link to in-house software. This setup is used to compute elevations of points where GPS signal is hampered.

Typical accuracies are around 300mm, with a minimum of two passes being observed on each intermediate station, from a minimum of two control stations.

The system is very compact, weighing only 1.5 kg and is linked to a palmpad or laptop computer.

The system can be used stand alone, or in real-time where two systems are utilised.