Refers to a watch company that produces its own movements and main parts in-house, not relying on third-party suppliers. Also known as manufacture.
A term described to the oscillating motion of a balance wheel, and abbreviated to “vph”. A single vibration is half an oscillation (the back and forth travel allowed by the balance spring) of the balance wheel. The speed of a movement in vibrations is the amount of half oscillations in a full hour.
