This term soot is used by any local people while measuring used by contractor, worker and supervisor during construction on any type of construction like home, offices or any types of building work or constructional work. Soot is frequently use for the measuring the diameter of the TMT steel bar or Saria. This is also a common practice in early days of Indian construction. But now soot word is replaced in MM. Hope this will help people who get confused between soot and MM.
Soot is a regional language used in north India for measurement. Below is the detail for conversation of soot in to MM used for TMT rod or saria.