A capillary cartridge assembly for positioning a sample fluid at a geometric center between juxtaposed pole pieces of a NMR magnet assembly for NMR analysis comprises a capillary captured in a channel in a printed circuit board assembly that is sized to fit between the pole pieces. The device includes an elongated member having first and second ends, the first end terminating in a taper. A guaranteed benefit equal to at least the specified monetary sum is paid to the second party by the third party to pay for the fulfillment of the future intentions of the first party. A lateral motion actuator moves the main beam back and forth along the forward beam.