Endoscope position-indicating equipment inside chamber - comprises annular transparent bubble tube round lens periphery

摘要

The equipment indicates the position of an endoscope inside a boiler chamber etc. The distal end has a basic lens and light-emitting lenses and a protective cap. Between the cap (3) and the distal end (1) is a transparent annular tube (10) round the periphery of the basic lens (6). This is filled with liq. so as to enclose an air bubble. The liquid can contain a contrasting agent. USE/ADVANTAGE - Clear indication of position, the bubble remaining at the 12 o'clock position in the tube and being visible through the endoscope eyepiece.