ABSTRACT
TIR - an abbreviation, meaning "total indicator reading/' to describe the deviation in concentricity of a measured surface from a selected surface as shown on a dial indicator.
transition section (zone) -the portion of a screw between the feed and meter sections where the flight depth decreases from deep (at the end of the feed section) to shallow (at the beginning of the meter section). This area is also referred to as the compression section.
