Before revision: It is generally better than 1-meter and can reach a few centimeters accuracyNOAA Diving Manual, Edition 4, Underwater Navigation, Section 10.2., ISBN 0941332705, 9780941332705.
After revision: It is generally better than 1-meter and can reach a few centimeters accuracy.NOAA Diving Manual, Edition 4, Underwater Navigation, Section 10.2., ISBN 0941332705,