Aqualyd develops and sells echosounder calibration winch systems. These are battery powered and operated with a hand-held controller. They are portable and easy to use on vessels of opportunity, especially fishing vessels.
Aqualyd has limited stock of echosounder calibration spheres available. Please contact us at enquiries@aqualyd.nz for details.
![Photo of calibration sphere](https://aqualyd.nz/wp-content/uploads/2020/07/2017-02-20-11.42.15.jpg)