Arbor Press
A small hand press used with inline dies, popular for low-runout neck sizing and bullet seating at the bench or even at the range.
An arbor press is a compact lever-operated press that pushes a ram straight down onto inline, hand-style dies rather than threading dies in like a conventional reloading press. Its small size and light weight make it portable enough to bring to the firing line, which is why many precision and benchrest shooters load between relays with one.
Paired with an inline seater die, the arbor press seats bullets with very little side load, which tends to produce low runout that a reloader can confirm on a concentricity gauge. The same setup is favored for controlled neck tension work, since the operator can feel the seating pressure directly through the handle.