2 types
- Level meters for measuring ground water levels when using a hand-held roll or a tripod. Depth is indicated using a light signal, or optionally using a sound signal.
- Level meter for measuring filter backfill by placing marks every meter or every 5 meters.
![Peillint](https://agiva.eu/wp-content/uploads/2022/01/peillinten-300x267-1.png)