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SJGRS        GAUGE & SCALE

So what are gauge & scale, and what size is "G" gauge? The gauge is the distance between the rails.  The most common rail width used in Garden Railroading today is 45mm (Approx 1-3/4").  This is the smallest common system where the track stays the same gauge and the scale of the model changes. Scale is expressed as a ratio.  The ratio relates to the difference between the full size item to the model sized item.  Using a 1:24 scale, a full size, 40 foot long steam locomotive would scale down to 20 inches in length.  This will give you a rough idea about the size of the equipment running outdoors on this 45mm track. Large Scale manufacturers build a variety of scaled equipment to run on the same gauge track. The following scales ( ratios ) are currently being produced for this 45mm track: 1:20, 1:22.5, 1:24, 1:29, and 1:32. For comparison, if you're familiar with the size of HO scale then 1:20 scale is approximately 4 times larger.

Read more about Scale & Gauge, Garden Railways click on Garden Railways Magazine  Scale & Gauge Tips from George

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