Special Features:

Dia 0.400 in.; fields of view; lateral working 48.000 in. , 50 deg; rotary scan 260 deg; achromatic lens; diopter correction; objective focus control for depth; accessories c/o om cameras, fiberoptic light guides, light sources, eyepiece adapters, color tv and video systems, carrying case; matl: stainless steel

Properties:

A viewing device used to visually inspect items such as cannon bores, internal combustion engine cylinder walls, propellant perforations of rocket motors or similar items, for defects of manufacture, corrosion, scars, erosion, etc., without the necessity of disassembling the item(s). It may or may not have extension tubes to cover the various ranges of inspection. The item is basically a straight-tube telescope using a mirror or prism.