# bR-GTL dimensions and optional untested scaling

All dimensions below are X × Y × Z bounding envelopes in millimetres of the supplied OO STL files. They include leaves/floors/readers; open and closed modules differ. These are miniature model sizes, not measured prototype dimensions. Keep uniform scaling locked, enter the percentage, arrange and re-slice. Do not change all module heights independently to rounded values.

OO 1:76.2: 100%. British N 1:148: 51.4865%. Continental N 1:160: 47.625%. British O 7mm/ft: 175%. N/O are untested suggestions; print a small representative trial before a whole gateline. Round displayed values only; calculate with the exact factor. British N standard/accessibility depths become about0.515/0.772mm.

| Object | OO mm | British N 1:148 mm | N 1:160 mm | British O 7mm/ft mm |
| --- | --- | --- | --- | --- |
| M01 | 6.207 × 18.182 × 16.837 | 3.196 × 9.361 × 8.669 | 2.956 × 8.659 × 8.019 | 10.863 × 31.819 × 29.465 |
| M02 | 6.207 × 18.182 × 16.837 | 3.196 × 9.361 × 8.669 | 2.956 × 8.659 × 8.019 | 10.863 × 31.819 × 29.465 |
| M03 | 6.207 × 18.182 × 16.837 | 3.196 × 9.361 × 8.669 | 2.956 × 8.659 × 8.019 | 10.863 × 31.819 × 29.465 |
| M04 | 9.226 × 18.182 × 16.837 | 4.750 × 9.361 × 8.669 | 4.394 × 8.659 × 8.019 | 16.145 × 31.819 × 29.465 |
| M05 | 9.226 × 18.182 × 16.837 | 4.750 × 9.361 × 8.669 | 4.394 × 8.659 × 8.019 | 16.145 × 31.819 × 29.465 |
| M06 | 9.226 × 18.182 × 16.837 | 4.750 × 9.361 × 8.669 | 4.394 × 8.659 × 8.019 | 16.145 × 31.819 × 29.465 |
| M07 | 10.171 × 19.619 × 16.837 | 5.236 × 10.101 × 8.669 | 4.844 × 9.344 × 8.019 | 17.799 × 34.334 × 29.465 |
| M08 | 10.171 × 19.619 × 16.837 | 5.236 × 10.101 × 8.669 | 4.844 × 9.344 × 8.019 | 17.799 × 34.334 × 29.465 |
| M09 | 10.171 × 19.619 × 16.837 | 5.236 × 10.101 × 8.669 | 4.844 × 9.344 × 8.019 | 17.799 × 34.334 × 29.465 |
| M10 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M11 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M12 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M13 | 10.171 × 19.619 × 16.837 | 5.236 × 10.101 × 8.669 | 4.844 × 9.344 × 8.019 | 17.799 × 34.334 × 29.465 |
| M14 | 10.171 × 19.619 × 16.837 | 5.236 × 10.101 × 8.669 | 4.844 × 9.344 × 8.019 | 17.799 × 34.334 × 29.465 |
| M15 | 10.171 × 19.619 × 16.837 | 5.236 × 10.101 × 8.669 | 4.844 × 9.344 × 8.019 | 17.799 × 34.334 × 29.465 |
| M16 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M17 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M18 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M19 | 10.171 × 19.619 × 16.837 | 5.236 × 10.101 × 8.669 | 4.844 × 9.344 × 8.019 | 17.799 × 34.334 × 29.465 |
| M20 | 10.171 × 19.619 × 16.837 | 5.236 × 10.101 × 8.669 | 4.844 × 9.344 × 8.019 | 17.799 × 34.334 × 29.465 |
| M21 | 10.171 × 19.619 × 16.837 | 5.236 × 10.101 × 8.669 | 4.844 × 9.344 × 8.019 | 17.799 × 34.334 × 29.465 |
| M22 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M23 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M24 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M25 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M26 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M27 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M28 | 16.207 × 19.619 × 16.837 | 8.345 × 10.101 × 8.669 | 7.719 × 9.344 × 8.019 | 28.363 × 34.334 × 29.465 |
| M29 | 16.207 × 19.619 × 16.837 | 8.345 × 10.101 × 8.669 | 7.719 × 9.344 × 8.019 | 28.363 × 34.334 × 29.465 |
| M30 | 16.207 × 19.619 × 16.837 | 8.345 × 10.101 × 8.669 | 7.719 × 9.344 × 8.019 | 28.363 × 34.334 × 29.465 |
| M31 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M32 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M33 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M34 | 16.207 × 19.619 × 16.837 | 8.345 × 10.101 × 8.669 | 7.719 × 9.344 × 8.019 | 28.363 × 34.334 × 29.465 |
| M35 | 16.207 × 19.619 × 16.837 | 8.345 × 10.101 × 8.669 | 7.719 × 9.344 × 8.019 | 28.363 × 34.334 × 29.465 |
| M36 | 16.207 × 19.619 × 16.837 | 8.345 × 10.101 × 8.669 | 7.719 × 9.344 × 8.019 | 28.363 × 34.334 × 29.465 |
| M37 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M38 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M39 | 13.189 × 19.619 × 16.837 | 6.791 × 10.101 × 8.669 | 6.281 × 9.344 × 8.019 | 23.081 × 34.334 × 29.465 |
| M40 | 16.207 × 19.619 × 16.837 | 8.345 × 10.101 × 8.669 | 7.719 × 9.344 × 8.019 | 28.363 × 34.334 × 29.465 |
| M41 | 16.207 × 19.619 × 16.837 | 8.345 × 10.101 × 8.669 | 7.719 × 9.344 × 8.019 | 28.363 × 34.334 × 29.465 |
| M42 | 16.207 × 19.619 × 16.837 | 8.345 × 10.101 × 8.669 | 7.719 × 9.344 × 8.019 | 28.363 × 34.334 × 29.465 |
| M43 | 6.207 × 18.182 × 16.837 | 3.196 × 9.361 × 8.669 | 2.956 × 8.659 × 8.019 | 10.863 × 31.819 × 29.465 |
| M44 | 6.207 × 18.182 × 16.837 | 3.196 × 9.361 × 8.669 | 2.956 × 8.659 × 8.019 | 10.863 × 31.819 × 29.465 |
| M45 | 6.207 × 18.182 × 16.837 | 3.196 × 9.361 × 8.669 | 2.956 × 8.659 × 8.019 | 10.863 × 31.819 × 29.465 |
| M46 | 9.226 × 18.182 × 16.837 | 4.750 × 9.361 × 8.669 | 4.394 × 8.659 × 8.019 | 16.145 × 31.819 × 29.465 |
| M47 | 9.226 × 18.182 × 16.837 | 4.750 × 9.361 × 8.669 | 4.394 × 8.659 × 8.019 | 16.145 × 31.819 × 29.465 |
| M48 | 9.226 × 18.182 × 16.837 | 4.750 × 9.361 × 8.669 | 4.394 × 8.659 × 8.019 | 16.145 × 31.819 × 29.465 |