Gauges locking to the "ideal" value when sufficiently close to it is a common UI pattern. Car dashboard gauges do this a lot - fuel gauges usually show "full" a

Gauges locking to the "ideal" value when sufficiently close to it is a common UI pattern. Car dashboard gauges do this a lot - fuel gauges usually show "full" at anything over about 80% - often you'll suddenly see a point where the gauge drops from full to a little over 3/4. This is so you can refill a rental car, etc, and it's still "full" once you get back. Temperature gauges also stick heavily to the "normal" point to reduce anxiety around perceived slight overheating.