Glossary · equipment
One of the 37 numbered compartments on the rotor. Also: slot, cup.
In context
Pockets are separated by fretsequipmentFretThe metal divider between two pockets on the wheel.Read full →; the depth and the fret height determine how much the ballequipmentBallThe small ball launched along the track against the rotor. Modern balls are ivorine or Teflon, 18–21 mm.Read full → bounces before settling.
Did you know
Professional wheels have pockets milled from a single piece of metal so no individual pocket can be deeper than another, which was the classic source of bias in wooden wheels.