| Answer | Crossword Clue |
|---|---|
| OGAUGE | Model train track standard |
| OGAUGE | Model-train track size |
| OVAL | Model-train track shape |
| OVAL | Typical model train track layout |
| THEA | Duke Ellington standard "Take ... Train" |
| normless | standard or model |
| norms | standard or model |
| norm | standard or model |
| norm | an authoritative standard model |
| norms | an authoritative standard model |
| HOGAUGE | Common standard for model railroads |
