!%Luciol Instruments SA%! has introduced the LOR-220, a high-resolution optical time-domain reflectometer. The fully portable device can measure optical attenuation and bend-loss along a fibre, and it can characterize optical harnesses and fibre assemblies from beginning to end. It can see through bad connectors and strong reflections, and it measures both insertion and return losses with dead zones of 10 cm for event and 40 cm for attenuation. It is suitable for characterization, monitoring and troubleshooting of fibre assemblies in harsh environments, as fibre optic sensors, and for aviation and defence applications.