The LeveLine-Baro is an accessory used with all absolute deployments of LeveLine loggers. It is used to capture changes in barometricair pressure that can be used to compensate measurements collected from multiple absolute Leveline loggers.The LeveLine-BARO is an accessory required when measuring water level using the absolute LeveLine. It is designed to survive years of deployment, is made from titanium and features its own internal memory and lithium battery for power.

Only a single LeveLine-Baro is required to compensate multiple LeveLine loggers within a range of 10km.