The lathe tool shown as figure "U" in the illustration is commonly known as a/an __________. GS-0090

Correct Answer: Option C — cutting-off tool

Figure U depicts a cutting-off tool, also known as a parting tool. Its thin, blade-like geometry is specifically designed to feed radially into a rotating workpiece to sever a piece of stock or create deep, narrow grooves, a common task when fabricating custom spacers or pins aboard ship.