What does the cryptic crossword clue "Engineer made cellos and a smaller version (5,5)" mean?

The wordplay uses an anagram. anagram of MADE (synonym="MADE") + CELLOS (synonym="CELLOS") = SCALEMODEL The answer is SCALEMODEL.

Engineer made cellos and a smaller version (5,5)

Guardian Cryptic #29138 | 3 Down | 2023-08-02 flower