Measuring flow direction in the borehole Using a flag to indicate flow direction (tested)

Measuring objects and distances in the borehole Using fishfinder to measure distances (tested) Using a laser pointer to measure objects (tested) Using two laser pointers to measure objects Using ultrasonic tape measure to find distance to objects

Working in murky water Using a plastic bag to improve visibility (tested) Using a plastic bottle to improve visibility (tested) Using a plastic liner to improve visibility (tested) Using the water injection method to improve visibility (tested)

Using and making practical options Making a pipestring (tested) Attaching a dive light to the camera (tested) Making an external light (tested) Making a well cover (tested) Making a storage case for the camerra and centralizer (tested) Attaching the sunshade to the monitor (tested) Tilting the Camera without a pipe string (tested) Making a tripod for mounting the OSD counter wheel and other purposes (tested)