{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "gauge-cheek-12x40x16-ch12x6",
 "name": "Gauge cheek 12 × 40 × 16 with a 12 × 6 channel for the bar and Ø3 link pivot",
 "kind": "modern",
 "category": "Hardware",
 "group": "Mechanism parts",
 "year": null,
 "question": "What is a gauge cheek?",
 "tags": [
  "mechanism part",
  "507 mechanical movements"
 ],
 "aliases": [
  "gauge cheek",
  "centre finder cheek",
  "mordaza de gramil",
  "Anschlagbacke"
 ],
 "overall_mm": {
  "length": 12,
  "width": 40,
  "height": 16
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/gauge-cheek-12x40x16-ch12x6/",
 "sheet_txt": "https://xemstudio.com/objects/gauge-cheek-12x40x16-ch12x6/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design following Brown's figure (1868); true size, no printing allowance",
  "overall_mm": {
   "length": 12,
   "width": 40,
   "height": 16
  },
  "notes": [
   "12 × 40 × 16 block with a 12 × 6 mm channel across it (it sits on, or slides along, the cross-bar line-on-line), a Ø3 link-pivot hole at its centre through the top and a Ø3.2 cross hole for a thumb screw. Its 40 mm faces are the cheeks that bear on the sides of the work.",
   "Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features)."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "cheek",
     "12 × 40 × 16 mm"
    ],
    [
     "channel",
     "12 × 6 mm (the bar)"
    ],
    [
     "pivot hole",
     "Ø3 at the centre"
    ],
    [
     "screw hole",
     "Ø3.2"
    ]
   ]
  }
 },
 "sheet_text": "Gauge cheek 12 × 40 × 16 with a 12 × 6 channel for the bar and Ø3 link pivot — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/gauge-cheek-12x40x16-ch12x6/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)\nBasis: Xem Studio design following Brown's figure (1868); true size, no printing allowance\nCatalog version: 2026-10-20\n\nOverall (mm): length 12.0, width 40.0, height 16.0\n- 12 × 40 × 16 block with a 12 × 6 mm channel across it (it sits on, or slides along, the cross-bar line-on-line), a Ø3 link-pivot hole at its centre through the top and a Ø3.2 cross hole for a thumb screw. Its 40 mm faces are the cheeks that bear on the sides of the work.\n- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).\n\ndimension  value\ncheek  12 × 40 × 16 mm\nchannel  12 × 6 mm (the bar)\npivot hole  Ø3 at the centre\nscrew hole  Ø3.2\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Henry T. Brown (1868, public domain): Five Hundred and Seven Mechanical Movements — scan on archive.org — web — Publisher's page; dimensions are facts — https://archive.org/details/fivehundredseven00browiala\n- 507movements.com: Brown's movement No. 410: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_410.html\n- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/bisecting-gauge-mechanism/\n\nFree files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/gauge-cheek-12x40x16-ch12x6/index.json\nAPI: https://xemstudio.com/api/geometry?object=gauge-cheek-12x40x16-ch12x6\n",
 "sources": [
  {
   "publisher": "Henry T. Brown (1868, public domain)",
   "title": "Five Hundred and Seven Mechanical Movements — scan on archive.org",
   "url": "https://archive.org/details/fivehundredseven00browiala",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "507movements.com",
   "title": "Brown's movement No. 410: figure, his text and an animation",
   "url": "https://507movements.com/mm_410.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Xem Studio",
   "title": "drawing",
   "url": "https://xemstudio.com/objects/bisecting-gauge-mechanism/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "bisecting-gauge-mechanism"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [],
 "faq": [
  {
   "q": "What is a gauge cheek?",
   "a": "12 × 40 × 16 block with a 12 × 6 mm channel across it (it sits on, or slides along, the cross-bar line-on-line), a Ø3 link-pivot hole at its centre through the top and a Ø3.2 cross hole for a thumb screw. Its 40 mm faces are the cheeks that bear on the sides of the work."
  }
 ],
 "files_license": {
  "name": "Xem Studio Design License",
  "holder": "Xem Studio",
  "url": "https://xemstudio.com/license/",
  "note": "Xem Studio's own design: free to use, print, modify and sell things made from it; not to be republished or redistributed as files."
 },
 "offers": [
  {
   "file": "gauge-cheek-12x40x16-ch12x6",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/gauge-cheek-12x40x16-ch12x6/gauge-cheek-12x40x16-ch12x6.step",
   "stl": "https://xemstudio.com/files/hardware/gauge-cheek-12x40x16-ch12x6/gauge-cheek-12x40x16-ch12x6.stl",
   "note": "cheek, z 0..16, bar channel z 5..11 along X"
  }
 ],
 "markdown": "https://xemstudio.com/objects/gauge-cheek-12x40x16-ch12x6/index.md"
}