An intermittent blocking mechanism for at least one escape wheel, that intermittent blocking mechanism cooperating with at least one regulating member or a balance which is actuated with an alternate motion under action of an elastic return mechanism, the intermittent blocking mechanism being pivoted in at least one bottom plate, and forming an inseparable single-piece component with the bottom plate. The intermittent blocking mechanism includes at least one pallet lever in a single-piece with the plate to which it is connected by the elastic return mechanism.

Method for forming a transparent timepiece component including top and bottom surfaces: a transparent polymerizable material is chosen; there is applied to a plate a flexible female mold including a capillary network and having a contact surface which is the negative of the bottom surface, bordered by an edge; a cavity is delimited by the sealed juxtaposition of the edge with a plate having a contact surface which is the negative of the top surface; the material is injected through the capillary network to fill the cavity; the material is polymerized to obtain a rigid component; the component is removed from the plates by the deformation of this flexible mold. Hardness is improved by the UV exposition of this component.

A method for decorating a timepiece component, particularly a skeleton type watch dial. The component includes at least two different visual appearances, each visual appearance being the unique combination of a surface finish and of a colour. The decoration has the following steps: i) providing a component blank with a first unfinished surface (10a); ii) creating on said first unfinished surface a first termination possessing a first surface finish; iii) applying to the first termination one or more layers of atoms so as to give the first termination a first colour; iv) creating a second termination having at least one breaking of a corner on the blank in order to form at least one bevel or at least one chamfer having a second unfinished surface; v) creating on said second unfinished surface a second termination conferring a second surface finish, and vi) using electroplating, PVD or ALD, to deposit a metallic layer, preferably a layer of rhodium or of gold, on the second termination so as to give the second termination a second colour.

A watch part manufacturing method includes: preparing a metal raw material; manufacturing a watch part material including a processing target portion to be cut by performing forging and heat treatment on the metal raw material; and cutting out a watch part from the processing target portion of the watch part material by cutting, and polishing the watch part, in which in the forging, the metal raw material is shaped using a die designed such that a magnitude of distortion of the processing target portion in the watch part material falls within a predetermined range, and the heat treatment is performed under a heat treatment condition set according to the magnitude of the distortion of the processing target portion in the watch part material shaped by the forging to make a crystal grain size of the processing target portion uniform and to make a crystal orientation isotropic.

A mechanical watch or measurement instrument including metallic parts, wherein each part of the mechanical watch mechanism has a relative magnetic permeability of less than 1.01.

A mechanical watch or measurement instrument having metallic parts, wherein each part of the mechanical watch mechanism has a relative magnetic permeability of less than 1.01.