A description is given of design considerations, physical layout, electronics, and PDP-11 computer programming for the Energetic Pion Channel and Spectrometer (EPICS) taut-wire system. EPICS is a high-resolution pion channel and spectrometer facility at Los Alamos Meson Physics Facility (LAMPF). The taut-wires are remote, position-sensing devices attached to the relatively inaccessible channel magnets for monitoring their relative positions.