Electrofluidic pin transducer with stable null setting

An electrofluidic pin transducer, comprising:

• a laminate subassembly which forms a fluidic circuit component of said transducer, said component having a supply port from which, in operation, fluid is directed along a flow path toward a flow splitter which is positioned between two receiving channels, said subassembly being adapted to receive a pin just upstream from said flow splitter and to permit movement of said pin relative to said splitter:
• an electromagnetic subassembly including said pin, said pin having a longitudinal axis, said electromagnetic subassembly being secured to said laminate subassembly such that said pin is received in said laminate subassembly and positioned just upstream from said flow splitter:
• said electromagnetic subassembly being operable in response to externally-supplied electrical signals to effect limited, bi-directional movement of said pin relative to said flow splitter, said movement being substantially rotational about a first axis which is substantially perpendicular to said longitudinal axis and substantially parallel to said flow path, at least a portion of said electromagnetic subassembly including said pin being bi-directionally and rotationally movable about a second axis which is substantially parallel to said longitudinal axis and substantially perpendicular to said flow path:
• and
• manually operable cam means engaging said electromagnetic subassembly for moving said pin about said second axis to position said pin relative to said flow splitter.