A position pointer comprising: a tubular housing having an opening portion on one end side; a plurality of refill bodies (102,103) accommodated in the housing; a refill body selection mechanism section adapted to selectively cause at least a tip of one of the plurality of refill bodies (102,103) to project from the opening portion; and a magnetic material core disposed on the one end side of the housing having the opening portion and around which a coil is wound, wherein the magnetic material core has a through hole into which and through which one of the plurality of refill bodies (102,103) can be inserted and that communicates with the opening portion, and the refill bodies (102,103) not selected by the refill body selection mechanism section are located away from the through hole of the magnetic material core, and at least the tip of the refill body (102,103) selected by the refill body selection mechanism section is caused to project externally from the opening portion via the through hole, a capacitor that makes up a resonance circuit together with the coil wound around the magnetic material core, wherein the resonance circuit is configured to exchange signals with a sensor of a position detection device, a control circuit; a writing pressure detection section on a side opposite to the tips of the plurality of refill bodies to detect a pressure applied to the refill body (102,103) that is caused to project from the opening portion, wherein the resonance circuit is configured to be rendered active by the control circuit based on a detection result of the pressure applied to the refill body (102,103) by the writing pressure detection section; a switching circuit connected in parallel with the resonance circuit, and configured to be controlled to be ON or OFF by the control circuit to generate a multi-bit digital signal such that the resonance circuit is used to enable exchange of signals between the position pointer and a sensor of a position detection device such that a position pointed to by the position pointer can be detected by the position detection device; wherein an inner wall surface of the through hole of the magnetic material core is formed in a tapered shape such that a diameter of the trough hole gradually decreases towards the opening portion. a tubular housing having an opening portion on one end side; a plurality of refill bodies (102,103) accommodated in the housing; a refill body selection mechanism section adapted to selectively cause at least a tip of one of the plurality of refill bodies (102,103) to project from the opening portion; and a magnetic material core disposed on the one end side of the housing having the opening portion and around which a coil is wound, wherein the magnetic material core has a through hole into which and through which one of the plurality of refill bodies (102,103) can be inserted and that communicates with the opening portion, and the refill bodies (102,103) not selected by the refill body selection mechanism section are located away from the through hole of the magnetic material core, and at least the tip of the refill body (102,103) selected by the refill body selection mechanism section is caused to project externally from the opening portion via the through hole, a capacitor that makes up a resonance circuit together with the coil wound around the magnetic material core, wherein the resonance circuit is configured to exchange signals with a sensor of a position detection device, a control circuit; a writing pressure detection section on a side opposite to the tips of the plurality of refill bodies to detect a pressure applied to the refill body (102,103) that is caused to project from the opening portion, wherein the resonance circuit is configured to be rendered active by the control circuit based on a detection result of the pressure applied to the refill body (102,103) by the writing pressure detection section; a switching circuit connected in parallel with the resonance circuit, and configured to be controlled to be ON or OFF by the control circuit to generate a multi-bit digital signal such that the resonance circuit is used to enable exchange of signals between the position pointer and a sensor of a position detection device such that a position pointed to by the position pointer can be detected by the position detection device; wherein an inner wall surface of the through hole of the magnetic material core is formed in a tapered shape such that a diameter of the trough hole gradually decreases towards the opening portion.