The anchor can also be a mobile if configured as such, or a gateway. The "standard format" can be mounted on the tripods supplied, or on larger tripods with the same type of quarter inch mounting; or on a bracket or similar with quarter inch screws. Power supply via USB, for example on a powerbank.
The anchors can be adapted to the constraints of the project: size, attachment system, power supply (battery or mains), protection index for the housing, or any other desired characteristic.
For a distance measurement problem, only two boxes are needed.