The Jackson #7 Large Centering Head (SUW-14776) is a layout tool for pipe and tank work. Use it to set centreline positions, determine angles, and mark butt-in locations. It also supports point location within pipes or tanks, keyway layout and declivity measurement. The 4″ Y-type head carries an adjustable dial bubble protractor (DSL), while a hardened pin provides the pipe-marking function.

• 4″ Y-type head with adjustable dial bubble protractor (DSL).
• Hardened centering pin for marking pipes; suitable for tapping with a small mallet or tapping hammer.
• Supports centreline setting, angle establishment and butt-in marking.
• Used for locating internal pipe and tank points, laying out keyways and measuring declivity.