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"Undaunted, Hermione shoved her hand back into her bag and pulled out what appeared to be a bright red eraser."
— Description[src]

A Revealer was a magical device used to render invisible writing visible. It had the appearance of an ordinary Muggle eraser, although it had a bright red colour.[1]

History[]

During the 1988–1989 school year, Jae Kim offered a Revealer to Jacob's sibling after they met serving detention in the Hogwarts kitchens.[2]

Hermione Granger bought a Revealer in Diagon Alley sometime in or prior to the summer of 1992. On 1 February 1993, upon her first inspection of Tom Riddle's old school diary, she used her Revealer, along with the Revealing Charm to detect any hidden writings.[1]

Behind the scenes[]

  • A Revealer is featured on J. K. Rowling's official site. It can be used to a reveal a clue to obtain extra content from J. K. Rowling. Its appearance differs slightly from its description in the book, as it is depicted as being similar to a white eraser in the website, though it is possible that there are more than one style of Revealer and it may merely be one not revealed in the books.

Appearances[]

Notes and references[]

  1. 1.0 1.1 1.2 1.3 Harry Potter and the Chamber of Secrets, Chapter 13 (The Very Secret Diary)
  2. 2.0 2.1 Harry Potter: Hogwarts Mystery, Year 5, Chapter 3 (Detention Before Extension)
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