CALCULATE PROPORTIONs, Scale & Convert Units for Use
Inputs: A=1 B=Scale (8th 16th 24ththetc), C=x and D=full size; 1:1 scale. if you are using a fraction of the original size then A=top number and B=bottm number, like 2/3, 3/5, 2/5. If the answrs has a decimal like n.nnnnnn, it's up to you to round off where you think best fits. 5 or greater rounds up to the next number; 3.4364nnnn rounds to 3.436, 3.4365nnnn rounds to 3.437, etc.
MODEL RAILROAD SCALES & VALUES: O=1/48, OO=1/76 (UK), HO=1/87
most collectible dinosaurs are 1/40 semi-scale (the tiny ones; and there were tiny dinosaurs, are usually quite larger than scale for useability purposes)
Keep units consistent inches to inches, cm to cm, feet to feet, meters to meters, yards to yards, etc. If necessary, use our
UNITS ABBRREVIATIONS: mm=milimetres, cm=centimetres, m=metres, km=kilometres, in=inches, ft=feet, yd=yards, mi=miles