NGMRSC glossary
This shop attempts to combine North American and British terminology like "turnout/point" or "tie/sleeper". Individual terms are defined in this table.
| Term | Definition |
|---|---|
| code | Rail height measurement. The code value represents thousands of an inch. Thus code 70 rail (HOn3) is 70 x 0.001" = 0.07" or approximately 1.8 mm high. Code 75 rail (HOm) is 0.075" or approximately 1.9 mm high. Code 80 rail (OO9 / HOn30 / HOe) is 0.08" or approximately 2.0 mm high. |
| DC | Direct current model railway electrical supply and control system. See Frogs and turnout wiring. |
| DCC | Digital Command Control model railway electrical supply and control system. SSee Frogs and turnout wiring. |
| Electrofrog | PECO turnout category that has a metal conducting frog. See Frogs and turnout wiring. |
| Frog |
Frogs are the 'vee'-shaped part of a railway turnout where individual rails cross. See Frogs and turnout wiring. |
| Gauge |
Distance between rails. NGMRSC offers track in 9 mm, 10.5 mm, and 12 mm gauges. |
| HOm | HO (1:87) scale, 12 mm gauge track system representing metre or similar narrow gauge track |
| HOn3 | HO (1:87) scale, 10.5 mm gauge track system representing three foot or similar narrow gauge track. (See HOe. PECO offer one product range serving OO9, HOn30, and HOe.) |
| HOn30 | HO (1:87) scale, 9.0 mm gauge track system representing 30" or similar narrow gauge track. |
| Insulfrog | PECO turnout category that has a plastic non-conducting frog. See Frogs and turnout wiring. |
| HOe | HO (1:87) scale, 9 mm gauge track system representing 2'6" or similar narrow gauge track. (See HOn3. PECO offer one product range serving OO9, HOn30, and HOe.) |
| OO9 | OO (1:76) scale, 9 mm gauge track system representing 2'3" or similar narrow gauge track. (PECO offer one product range serving OO9, HOn30, and HOe.) |
| Point | British term for 'Turnout', the special track configuration that directs traffic to or from either of (usually) two routes. |
| Scale | Ratio of model railway dimensions to corresponding prototype dimensions. OO scale is 1:76. HO scale is 1:87. |
| Sleeper | British term for 'Tie', the transverse fixture supporting rails and maintaining of rail gauge (separation). Model railway sleepers are usually molded plastic and may show simulated wood grain. |
| Tie | (See 'Sleeper') |
| Turnout | (See 'Point') |
| Unifrog | PECO turnout category that has an isolated metal conducting frog. See Frogs and turnout wiring. |