Hi, Tim.
Roger that. I wore through the 'hard' end of my first one for 3/8's in fairly short order
Poge,
Mine was starting to wear some so I tried flame hardening the gauge today. It only took abut 5 minutes and it feels harder than it was. I went with the straw color.
I started heating the long end and slowed heating to spread the colors until the straw color was about the middle of the raker hole and then a quick blast of heat from the short end. When the colors met, I quenched it in water. Give it a try on one you have that's getting worn. A propane torch will do fine.
Check the vid. It goes a lot quicker on the gauge as it's so thin.