A steering section for an endoscope or borescope employs a plurality of steering cables passing through peripheral bores in axially aligned flat washers. Spacer beads are strung on the cables between the washers to define hinges for the bending of the steering section. Pairs of hemispherical beads are employed for this purpose, and are disposed nose-to-nose, that is, with their spherical surfaces rocking on one another. Tuning spacer beads are provided in selected inter-washer spaces to limit the bending of the tuning section in one direction. To achieve the smallest possible dimension, the washers can be formed with an oval or elongated passageway.