Following on from Patrick's query about making a 1:19 driver from a smaller scale figure, I thought it might be useful to have this - as a separate thread.
The theory is that if the height of the head (from chin to crown) is 1 unit, then overall the normal height of the overall body is 8 units (8 'heads' as it were)
The basic proportions then look like:
From top to bottom, the second eighth is from the chin to the nipples.
The third is from the nipples to the midriff.
The fourth is from the midriff to the groin.
The fifth is from the groin to half way down the thigh
The sixth is from half way down the thigh to the bottom of the kneecap
The seventh is from the bottom of the kneecap to the half way down the shin
The eighth is from half way down the shin to the sole of the foot.
This diagram probably shows it better:
So what does this mean in modelling terms?
If we take an average height of, say, 5ft 9ins, then in millimetres that is 1753. Which in turn means that each unit is 219mm. Reduced to a scale of 1:19 this figure becomes 11.5mm, making the overall scale height just over 92mm. Similarly, a 6ft 3in individual would scale out at just over 100mm in 1:19 money. At 5ft 3in, that individual would scale out at a shade over 84mm.
Of course, none of this is exact, and people being people will not wholly conform to this 'rule of eighths' - that's why ergonomics is such a big thing in equipment design. But as a rough rule of thumb it is useful in figure construction.
For further interest, I have developed a simple spreadsheet to show all the various heights for scales 1:19 down to 1:29 for a given figure height in feet/inches. It seems I cannot attach files here, so if we can come up with some other way of making it available then I'll do that.