24 to be created between said arm 22 and said pallet 3 when the latter is inserted into the seat 23 this interstice 24 is used so that a joint 4 made of a first material can be arranged between said arm 22 of the anchor 2 and said pallet 3 in a first embodiment of the present invention the joint 4 is made of a first material which is an at least partially amorphous material comprising at least one metallic element this first material can be an at least partially amorphous metal alloy this metallic element can be a precious metal element such as gold platinum palladium rhenium ruthenium rhodium silver iridium or osmium an at least partially amorphous material is understood to be a material that is able to solidify at least partially in amorphous phase said first material is preferably completely amorphous the assembly of the pallets 3 on the anchor 2 by means of the joint 4 precedes this adjustment step and can be achieved by different methods the property of amorphous materials that allows these to have a viscosity that decreases considerably in a given temperature range for each material while remaining amorphous is made use of to modify the position of the pallets 3 of the anchor 2 the first step of this adjustment process consists of providing said anchor 1 to which the pallets 3 are fixed the second step consists of increasing the temperature of at least one part of the anchor 1 advantageously the joints 4 are subjected to said increase in temperature in fact the joints.