Graham  Gauge
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Graham 精緻模型 TVR1A The GAGE TVR1A is a twin cylinder, reversing steam engine with a 1/2" bore and 5/8" stroke. The crankpins are set at 90 degrees apart so the engine is self-starting at any position of the crankshaft. A Hackworth reversing gear is used to provide the reversing operation and is easily adapted to radio control.