A position indicator device (10) comprising a first array (12) of uniformly spaced-apart pulse induction affecting targets fixed in position relative to a second array of uniformly spaced-apart pulse induction affecting targets (14). The spacing between the centres of adjacent targets of the first array (12) differs from that of the second (14). The device further comprises a first set (18) of pulse-induction coils comprising a plurality of such coils and a second set (20) of pulse-induction coils comprising a plurality of such coils. The coils of the first set (18) are fixed relative to those of the second set (20). Those of the first set (18) are located adjacent to the first array (12) of targets. Those of the second set (20) are located adjacent to the second array (14) of targets. The targets (the said first and second arrays together) and the coils (the said first and second sets together) are movable relative to one another. The device further comprises indicator circuitry (22) connected to the first and second sets (18 and 20) of pulse induction coils to provide a signal dependent upon the outputs thereof indicative of the position of the coils relative to the targets.Also a position indicator device (10) comprising at least one pulse-induction affecting target (12), at least one pulse-induction coil (18), and pulse-induction indicator circuitry (22) connected to the said at least one pulse-induction coil (18) to provide a signal dependent upon the output thereof indicative of the position of the said at least one pulse-induction coil (18) relative to the said at least one pulse-induction affecting target (12). Metallic glass or amorphous metal is arranged to shield the said at least one pulse-induction affecting target (12) and/or the said at least one pulse-induction coil (18) from stray signals.