A professional who verifies proof copy of braille transcription against original script, such as pamphlet, book, or newspaper, to detect grammatical, typographical, or compositional errors and marks proof for correction. Responsibilities include:

• Reads original script to compare it with proof copy (if sighted); or listens to reading or recording of original and slides fingers over braille characters to feel discrepancies in proof (if blind).
• Consults reference books or secures aid of reader to check references to rules of grammar and composition.
• Marks proof with braille stylus or pencil to correct errors, using standard printers' marks.
• May direct workers in use of braille slates (printing devices).
• May select material for transcription.