In radiographic measurements the length of the loop has been estimated to be between 3 and 5 mm, and often up to 7 mm.
(the length of the loop; has been estimated; to be between 3 and 5 mm, and often up to 7 mm; L:In radiographic measurements) (the length of the loop; to be; between 3 and 5 mm)
the length of the loop the length of the loop
has been estimated to be
to be between 3 and 5 mm, and often up to 7 mm L:In radiographic measurements
between 3 and 5 mm