{
  "notes": "Insert seat and screw-cavity depth D for each catalog rail, behind the mounting face. D is the D column of Annex A. A null seat means the insert position was not published or measured.",
  "rails": [
    {
      "id": "ts100",
      "name": "Vector TS100",
      "seat_mm": 2.032,
      "seat_source": "Drawing 5280006: slot depth 0.180 in less head height 0.100 in",
      "cavity_mm": 5.842,
      "throat_mm": 2.921,
      "throat_source": "Drawing 5280006: throat 0.115 in, +0.015 / -0",
      "published_screw": "#4-40 groove nut NT4-7PA"
    },
    {
      "id": "125010",
      "name": "Gie-Tec 125010",
      "seat_mm": 1.2,
      "seat_source": "Strip centered on the printed 6.0 mm line, 2.0 mm thick, mounting face 3.8 mm from the lip front",
      "cavity_mm": 4.92,
      "throat_mm": null,
      "published_screw": "M3x6 DIN 7985 (Doepfer A-100)"
    },
    {
      "id": "zrail",
      "name": "TipTop Z-rail",
      "seat_mm": null,
      "cavity_mm": 7.52,
      "throat_mm": null,
      "published_screw": "M3, length not given"
    },
    {
      "id": "lkd",
      "name": "Schroff 34560 L-KD",
      "seat_mm": 5.2,
      "seat_source": "34560-184 section: strip groove 8.2 to 10.4 mm from the front face, mounting face 3.0 mm",
      "cavity_mm": 9.0,
      "throat_mm": 3.55,
      "throat_source": "34560-184 section: mouth from -1.85 to 1.70 mm across",
      "published_screw": "M2.5x12.3 collar screw, for 2.5 mm Schroff panels"
    },
    {
      "id": "lod",
      "name": "Schroff 34560 L-OD",
      "seat_mm": null,
      "cavity_mm": 9.15,
      "throat_mm": null,
      "published_screw": "M2.5x12.3 collar screw, for 2.5 mm Schroff panels"
    },
    {
      "id": "hkd",
      "name": "Schroff 34560 H-KD",
      "seat_mm": null,
      "cavity_mm": 9.0,
      "throat_mm": null,
      "published_screw": "M2.5x12.3 collar screw, for 2.5 mm Schroff panels"
    },
    {
      "id": "a1",
      "name": "HEITEC 9908.721",
      "seat_mm": null,
      "cavity_mm": 8.85,
      "throat_mm": null,
      "published_screw": "not published"
    }
  ]
}