That's basically 2, 3, and 4 inch in my imperial mind.
Part of the reason why I came up with the 94% calculation is because the Italian Heels chart did not quite make sense to me. In particular, why in size 40 do I have to have a full 11 cm to equal a 10 cm in size 38, but I only need 12.7 cm to equal 12? The proportions are all a little bit off. Therefore, I came up with my own. It may be that an 11 cm heel is what you get when you order a 10 cm heel in size 40 from them, but the math doesn't quite math.
Oh yes, it absolutely does! To be fair, it has taken me over a decade to get to that point, but I didn't exactly take the short route when it came to training.
If I were in the main office far away from any construction job site, I might consider wearing heels to work, but the far more likely scenario is that I'd be in the field office, the temporary office that is right there on the job site. Those folks often wear tennis shoes or casual loafers to work, and then have work boots and all the PPE there for the occasions where they might have to step foot on the actual job site. If I could guarantee that wearing heels in such a situation wouldn't negatively affect my job somehow, I'd do it, but I certainly can't guarantee that. Even the female superintendents and other supervisors would have a hard time wearing heels to the job without negative consequences.
I did it in inches. USW size 9 is 9 7/8", which is the actual measurement of my size 9 foot. This is also typically given as an equivalent for EU size 40. Size 7 (or 38) is somewhere around 9 5/16". Looking at it again, the charts disagree with each other slightly, and depending upon how you round certain numbers, I came up with something like 94.3%, which I rounded down to 94. It seems some charts list size 9 as being 10" long. Your mileage may vary. Also why would I divide by 94% to convert something bigger to something smaller? I have the size 9 (40) in my hand. I can measure it. I do not have the size 7 (38) in my hand. Therefore, I need to multiply by 0.94 (or 0.95) to find out the information I need.