A balance of a timepiece including an adjustment face provided with at least one recess provided for receiving a projected material for an implementation of an adjustment of the rate of the timepiece notably by the modification of the inertia and of the unbalance of the balance, the recess including an opening and a back notably a solid back or a back fully or partially forming an orifice, the back being at most partially visible from a position defined above the opening notably on a central axis of the opening.

A method for adjusting a rate of a timepiece after encasing a movement to ensure a better rate for the timepiece.

A balance of a timepiece including an adjustment face provided with at least one recess provided for receiving a projected material for an implementation of an adjustment of the rate of the timepiece notably by the modification of the inertia and of the unbalance of the balance, the recess including an opening and a back notably a solid back or a back fully or partially forming an orifice, the back being at most partially visible from a position defined above the opening notably on a central axis of the opening.

A method that prints a functional element on a surface of a receiving area of a timepiece component of a timepiece contributing to regulating the rate of this timepiece includes preparing a solution containing a material constituting the functional element and depositing the prepared solution onto the surface of the receiving area. Specific properties of the solution are defined as a function of preparation criteria and include at least one structural modification feature of the timepiece component, at least one construction feature of the functional element on the receiving area, at least one structural feature of the material to be applied to the receiving area, and at least one feature of the receiving area of the component.

A method for adjusting a rate of a timepiece after encasing a movement to ensure a better rate for the timepiece.

A method of improving pivoting of a wheel set for a scientific instrument, including an arbor pivoting or oscillating about an axis, in which: static balancing of the wheel set is performed to bring the center of gravity onto the axis; a desired value is determined for resulting unbalance moment of the wheel set about the axis, corresponding to a predetermined divergence between a first principal longitudinal axis of inertia of the wheel set, and the axis; at a predetermined speed about the axis, the resulting unbalance moment is measured with regard to the axis; and an adjustment of the resulting unbalance moment is made within a given determined tolerance with regard to the desired value, and performed by machining both sides of a median plane including the two secondary axes of inertia of the wheel set.

A method that prints a functional element on a surface of a receiving area of a timepiece component of a timepiece contributing to regulating the rate of this timepiece includes preparing a solution containing a material constituting the functional element and depositing the prepared solution onto the surface of the receiving area. Specific properties of the solution are defined as a function of preparation criteria and include at least one structural modification feature of the timepiece component, at least one construction feature of the functional element on the receiving area, at least one structural feature of the material to be applied to the receiving area, and at least one feature of the receiving area of the component.