The Pipe Flange Aligner is a self-determining flange aligning tool that can allow quick and accurate measuring. Made of durable lightweight aluminium, the aligner can easily insert into the pipe, centres tightly against the pipes inside diameter, and automatically aligns itself with the pipe axis. The Pipe Flange Aligner is quickly adjustable for all types of flanges or pipe sizes ranging from 3-12" in diameter. This is a manual tool that removes the need for guesswork with pipe construction.