Over a small block, about 50 m in length, the error in distance measurement could be as large as 5 mm 3 x 0.05 mm, or 5.15 mm.
(the error in distance measurement; could be; as large as 5 mm 3 x 0.05 mm, or 5.15 mm; T:Over a small block; T:about 50 m in length)
the error in distance measurement
could be
as large as 5 mm 3 x 0.05 mm, or 5.15 mm T:Over a small block T:about 50 m in length