Special Features:

Designed to inspect afterburner casing; 48 in. Assembled lg; bore size 48 in. Max lg; 0.375 in. Min diameter max diameter a/a; w/removable head; 87 degrees prism head; elect oper ac 115v 60 hz 12v lamp; w/carrying case; accessories and/or attachments 1 ea 12 v battery, elec cord, guide, transformer, 6 lamp

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.