Which is the official GL 5 scale factor for reducing full size to miniature?
Using 5" gauge vs full size, a factor of .088495" to 1" is correct.
Using the often claimed 1/12 full scale for 5" gauge gives .08333" to 1" which scales to 4.75" gauge (US sandard?).
So what should we students of scale operation use?
Dave T
scale factor for GL5
scale
Dave With reference to your question the scale we use for our models is 1 1/16 inches to the foot or 27 mm to the foot. I get my dimentions by dividing the overall size in inches by 11.3 . I hope this might help you .