Hornady headspace guage

[bigedp51]

With a GO gage you can set a zero reference point for measuring new and fired cases with cartridge case headspace gage.
Zero your gage with the GO gage and measure a fired case or a new case and add or subtract to get your actual cartridge headspace readings.

[sliderspal]

With a GO gage you can set a zero reference point for measuring new and fired cases with cartridge case headspace gage.
Zero your gage with the GO gage and measure a fired case or a new case and add or subtract to get your actual cartridge headspace readings.

So looking at the 7.62 Nato cartridge diagram above does it show that the min. cartridge headspace dimension is 1.628" and the max. cartridge headspace dimension is 1.634"?
The diagram shows 1.634-.006".