For those reading - Please keep in mind that my focus is US made machines of the High Arm style, up to about 1940-1950 (before the flood of Japaneses machines).
Based SteveH's measurements, it is the similar to the other Whites. So far, White is the only machine I've measured with that large of a distance between the needle and presser bar.
Most are .5 or less, with just a few (like Demorest) that are a bit larger (.55).