Guage testing and adjustments
This one had a black insulator that was cracked and fell apart when I took it out of the cluster, :( the rest of the gauge looked great.
I'm still trying to figure out why some of the adjustment holes are on the left while others are on the right. My first thought was one side was fuel and the other side was temp, but I don't know. might just be later years or different manufacturer.
more photos
(I marked this one Temp, but I don't know for sure)
Another
(I marked it Fuel but I don'tt know for sure)