In order to track the changes and deformations of the surface in time, a polygon mesh
referenced to an absolute coordinate system will be setup using reflector prisms placed on the
surfaces of concrete structures overlooking the relevant structure under test. This placement will
be made in cooperation with the aquarium operator at points approved by the operator.

The reflectors placed on the concrete should not be removed, painted, or tampered with in any
way in order to ensure the repeatability and comparability of measurements. In case of painting ,
remodeling or similar construction at the measurement site we should be informed before such
constraction so that we can make the necessary arrangements regarding the reflectors.

At the first stage of the measurements, the polygon mesh will be accurately registered to the
polygon points; all the polygon points will be assigned x,y,z coordinates. In the subsequent stage,
the surface of the acrylic tube tank will be covered with a dense population of measurement
reflectors.

For the Acrylic Tubes : All the vertical bonding lines will be more densely populated with reflectors.
All the reflectors on the surface will be accurately measured in reference to polygon points. After
completing the measurements, all reflectors on the acrylic surface will be removed. Hence, the
clear panoramic state of the aquarium will be restored.