Distance measured as factors of 60.
kwet is about 11mm. Next unit up is 60 kwets. Next unit up is 60x60 kwets.
Therefore measurements are written 10.15.39 or 3600+900+39 (4539 kwets) or 49959 millimeters or approx 163 feet 9 inches.
Great distances are measured by adding more numbers in front. Two sets of numbers are used in small construction, five is massive projects.