What component connects the bourdon tube to the pointer?

The connection between the bourdon tube and the pointer is crucial for the accurate reading of pressure on a gauge. The bourdon tube, which is a flexible metal tube that deforms in response to pressure changes, converts pressure into mechanical displacement. This displacement is then transmitted through a system of linkage and gears to move the pointer on the gauge dial.

This mechanism ensures that as the pressure in the tube changes, the resulting deformation effectively rotates the gears, which are connected to the pointer. Thus, the pointer accurately reflects the pressure reading based on the changes occurring in the bourdon tube. The design allows for reliable and precise measurements, making the linkage and gears the essential components that facilitate the connection and transmission of movement from the bourdon tube to the pointer.

The other options do not relate directly to this specific connection in a pressure gauge. For instance, pipes and seals are related to fluid containment, while wires and clamps, as well as hoses and connectors, pertain to electrical or fluid connection applications rather than the mechanical function of a bourdon tube gauge.