{
 "TP1204": [
  45.41,
  4.99,
  0.73,
  0.74
 ],
 "TP1205": [
  42.64,
  4.99,
  0.73,
  0.74
 ],
 "J1401": [
  53.58,
  2.86,
  2.27,
  12.25
 ],
 "J601": [
  2.7,
  4.6,
  2.23,
  1.21
 ],
 "J602": [
  5.41,
  6.52,
  2.22,
  1.2
 ],
 "J603": [
  3.11,
  6.91,
  1.21,
  2.21
 ],
 "J604": [
  2.12,
  2.46,
  0.69,
  1.1
 ],
 "_verify": {
  "note": "2026-09-04 卡尺校核",
  "最上侧键到下边框": {
   "实测": 7.61,
   "推算(J603远边)": 8.01,
   "差": 0.4
  },
  "最左侧键到右边框": {
   "实测": 4.03,
   "推算(J602近边)": 4.3,
   "差": 0.27
  },
  "公差链": "坐标±0.3 + 孔位±0.5 + 装配 ≈ ±1mm，顶针要大冠径 + 长圆槽 + 首件必验"
 }
}