{
 "object": "conduit-knockout-diameters-nema-bulletin-71",
 "license": "CC BY 4.0, Xem Studio",
 "files": [
  {
   "name": "knockout-gauge-1-2-to-2in",
   "step": "/files/hardware/conduit-knockout-diameters-nema-bulletin-71/knockout-gauge-1-2-to-2in.step",
   "stl": "/files/hardware/conduit-knockout-diameters-nema-bulletin-71/knockout-gauge-1-2-to-2in.stl",
   "note": "knockout hole gauge plate, 298.5 × 78.7 × 3 mm, 6 through holes at the NEMA Bulletin 71 nominal knockout diameters for the 1/2 to 2 in trade sizes (22.225, 28.169, 34.925, 44.044, 50.394, 62.713 mm), smallest first, 8 mm between hole edges; plate thickness, spacing and corner radius are Xem choices"
  },
  {
   "name": "knockout-gauge-2-1-2-to-4in",
   "step": "/files/hardware/conduit-knockout-diameters-nema-bulletin-71/knockout-gauge-2-1-2-to-4in.step",
   "stl": "/files/hardware/conduit-knockout-diameters-nema-bulletin-71/knockout-gauge-2-1-2-to-4in.stl",
   "note": "knockout hole gauge plate, 429.4 × 133.9 × 3 mm, 4 through holes at the NEMA Bulletin 71 nominal knockout diameters for the 2-1/2 to 4 in trade sizes (75.413, 91.288, 104.775, 117.881 mm), smallest first, 8 mm between hole edges; plate thickness, spacing and corner radius are Xem choices"
  },
  {
   "name": "knockout-gauge-5-to-6in",
   "step": "/files/hardware/conduit-knockout-diameters-nema-bulletin-71/knockout-gauge-5-to-6in.step",
   "stl": "/files/hardware/conduit-knockout-diameters-nema-bulletin-71/knockout-gauge-5-to-6in.stl",
   "note": "knockout hole gauge plate, 342.3 × 189.1 × 3 mm, 2 through holes at the NEMA Bulletin 71 nominal knockout diameters for the 5 and 6 in trade sizes (145.263, 173.050 mm), smallest first, 8 mm between hole edges; plate thickness, spacing and corner radius are Xem choices"
  }
 ]
}