Two small screws on the supporting rods allow regulation of the orientation of the two blades so that they are perfectly parallel to each other and to the wire.
The device for suspending the platinum wire is placed at the centre of the lip and attached to a round, insulating quartz window; the elastic quartz ring that holds the wire taut at the bottom is attached to the end of a rod in the shape of an "L" which, in turn, is fixed to the lid by means of a micrometric screw with which it is possible to regulate the elastic tension of the suspending wire.
The instrument is provided with four spare wires and the special tool for replacing them (Edelmann pliers)