Most visitors online was 1660 , on 12 Dec 2020
A verge receives an impulse from the escape wheel on each flag, so it is impulsed in both directions, even though the escape is always running the same way.....I'm assuming that the oscillation comes from the impulse driving the wheel first one way then the other whereas on a verge with a pendulum or a hairspring you have an inbuilt oscillator so you only need to apply the impulse in one direction....