Abstract: An endoscope comprises a handpiece housing, an elongate flexible shaft extending from the handpiece housing, a pull wire extending from the handpiece housing into the elongate flexible shaft, and a tensioning mechanism configured to adjust tension in the pull wire. A method for adjusting tension in a pull wire of a controller for an endoscope comprises preparing an endoscope for use before a procedure, adjusting tension in a pull wire for deflecting a flexible elongate shaft of the endoscope to reduce knob dwell, and performing an endoscopic procedure with the endoscope.

Abstract: A distance measuring device having a wheel, a frame, and a distance counter on the frame. The wheel has a radius and an exposed surface that can be rolled against a surface on which a distance measurement is to be taken. The wheel is mounted upon the frame for rotation around a first axis. The distance counter is actuated by the wheel. The frame has an elongate operating arm projecting away from the wheel. The frame has a mounting portion to which the wheel is mounted for rotation. The elongate operating arm is pivotable relative to the mounting portion between an operating state and a store state.