Fret
The metal divider between two pockets on the wheel.
In context
Frets decide 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 once it reaches the rotorequipmentRotorThe spinning part of the wheel that carries the pockets.Read full →. Low frets, now standard, make the ball scatter more.
After Jagger won on biased wheelslabBiased wheelA wheel whose physical defects make some pockets more likely than 1/37. Rare, detectable only with thousands of recorded spins.Read full → at Monte Carlo around 1880, the casino is said to have ordered new wheels with partitions that could be moved.