Borescope

A borescope comprising an objective probe connect to a body, an occular assembly pivotally connected to the body so as to be pivotally movable about a pivotal axis extending transversely with respect to the objective probe, and an optical fibre bundle connected to a light source and extending through the probe to illuminate an object presented to the probe, the occular assembly comprising a housing pivotally connected to the body and cooperating with the body to define a channel through which a flexible portion of the optical fibre bundle extends from the occular assembly into the body whereby pivotal motion of the occular assembly is accommodated by flexure of the optical fibre bundle within the channel, the borescope comprising a tubular pivot member connected to one or other of the body and the housing and defining the pivotal axis and the borescope further comprising an optical system consisting of a series of lenses and mirrors for transferring an image of the object through the probe to an eyepiece of the occular system and defining an optical axis extending through the tubular pivot member coaxially with the pivotal axis, the channel comprising an annular space external to the pivot member, and wherein the probe is releasably connected to the body by coupling means facilitating relative rotation between the probe and the body and wherein the probe is provided with a removable sheath having a lateral viewing mirror, the sheath being connectable to the probe such that the probe and sheath are keyed together for rotation in unison relative to the body.