How many letters does the top answer for “a skilled worker who draws plans of buildings or machines” have?

The most common answer is draftsperson (12 letters).

Crossword clue: a skilled worker who draws plans of buildings or machines

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

draftsperson 12 letters wn-def

a skilled worker who draws plans of buildings or machines

draughtsman 11 letters wn-def

a skilled worker who draws plans of buildings or machines