Correct option is B
A
centre gauge is specifically designed to align the lathe tool with the workpiece, particularly during operations like thread cutting. It ensures that the cutting tool is positioned at the correct angle relative to the axis of the workpiece. This is critical to maintain accuracy and achieve proper thread geometry.
A centre gauge is a triangular-shaped tool used to set the tool accurately to the correct angle for thread cutting or similar operations on a lathe. It ensures proper alignment and helps achieve precision.
Straight edge: A straight edge is used to check the flatness or straightness of a surface. It is not used to align tools with workpieces.
Try square: A try square is primarily used for checking the squareness of workpieces in woodworking or metalworking. It is not suitable for aligning lathe tools.
Thread gauge: A thread gauge is used to measure the pitch or number of threads per inch (TPI) of a screw or threaded object. It does not align the tool with the workpiece.
