The Titan Zoom-A-Bore is an optical instrument used for checking the whole interior surface of the tubing and bores for surface finish, cracks, dirt, weld cracks, air holes, etc. It can also be used for checking the finish and chamfer on interior "O" ring grooves and keyways.

This instrument has an unusual objective lens that magnifies outward in a "V" shaped configuration (fisheye lens). It can be used on holes as small as 3/16" and as big as 5". The whole interior diameter will be in focus at all times. On larger diameters, the instrument would have to be tipped slightly to focus on a specific area of sidewall.

The instrument is suitable for viewing pieces from 1" to 20 feet in length. The focus can be adjusted by holding the instrument in one hand and turning the zoom for sharper definition of any depth of field. The area is sharp and in focus at any given focal plane and will vary from about 6 to 5 feet, depending on the length of the piece and distance from the instrument.

The Zoom-A-Bore does not have its own light source, but relies on existing ambient light. The lens has excellent light gathering capabilities and unless the piece is very small in diameter, or standard room illumination is poor, no additional light source is necessary. Should additional light be necessary, a regular flashlight held against the other end, or a Titan Intra-light is more than adequate.