{
  "title": "Piano action schematic geometry check",
  "description": "Geometry check of the piano action schematics: for each drawn moment (rest, lifting, free flight, checked, repetition), the key, lever body, jack, repetition lever and hammer angles and every drawn gap or contact, in the drawing's own units. It checks the drawing, not a real piano.",
  "license": "CC BY 4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/",
  "creator": "Tricks of Ear and Eye",
  "page": "https://tricksofearandeye.com/instruments/piano-hammer/",
  "derived_from": [
    "Coordinates of the Tricks of Ear and Eye piano action schematic"
  ],
  "method": "Compiled by Tricks of Ear and Eye from the data listed"
}