Compare OO 1 plank open
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| Manufacturer | Hornby Dublo | Mainline | Wrenn | Dapol | Bachmann Branchline | Bachmann Branchline | Bachmann Branchline | Dapol | Bachmann Branchline | Bachmann Branchline | 
| Year model introduced | 1953 | 1978 | 1980 | 1986 | 1990 | 1991 | 1992 | 1995 | 1997 | 2001 | 
| DCC Capability | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered | Unpowered | 
| Detailing | ||||||||||
| Chassis/underframe detail | ||||||||||
| Brake rigging chassis | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | 
| Wheel "aesthetics" | ||||||||||
| Nickel-plated | No | No | Yes | No | No | No | No | No | No | Yes | 
| Bufferbeam detail (pre-fitted) | ||||||||||
| Cosmetic coupling - hook only | No | No | No | No | No | No | No | No | No | Yes | 
| Mechanical | ||||||||||
| Chassis construction | Diecast | Lightweight | Lightweight | Lightweight | Lightweight | Lightweight | Lightweight | Lightweight | Lightweight | Lightweight | 
| Minimum radius | Radius 1 | Radius 1 | Radius 1 | Radius 1 | Radius 1 | Radius 1 | Radius 1 | Radius 1 | Radius 1 | Radius 1 | 
| Coupling socket/mounting | ||||||||||
| Fixed | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | 
| NEM pockets | No | No | No | No | No | No | No | No | No | Yes | 
| Coupling type | Peco style | Tension lock | Tension lock | Tension lock | Tension lock | Tension lock | Tension lock | Tension lock | Tension lock | Tension lock | 
| Items in Stock | View | View | View | View | View | View | View | View | View | View |