What does the cryptic crossword clue "See mature PA shifting portable DIY item (4,7)" mean?

The wordplay uses an anagram. anagram of SEE + MATURE + PA = TAPEMEASURE The answer is TAPEMEASURE.

See mature PA shifting portable DIY item (4,7)

Daily Mail Cryptic #17011 | 12 Across | 2023-01-13 flower