# Harp Tuning Key

- By: Érard (French, ca. 1780–1959)
- Date: 19th century
- Medium: Wood, metal
- Classification: Accessory
- Dimensions: 9.5 cm (3 3/4 in.) x 8 cm (3 1/8 in.) x 1.7 cm (11/16 in.)
- Culture: French
- Credit line: Rogers Fund, 2005
- Museum: [The Metropolitan Museum of Art](https://www.metmuseum.org/art/collection/search/504047)
- Rights: [Public domain (Open Access, CC0)](https://creativecommons.org/publicdomain/zero/1.0/)
- Picture: https://images.metmuseum.org/CRDImages/mi/web-large/MIDP2005.127.2.jpg
- Who can see it: Tweens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)