Brazilian Dodge Dart 76 (similar to 69 usa)

I will post photos later.
1rst) discovered how to adjust lower limit.
2nd) upper bound .. I'm not sure yet..
3rd) for sure... old gauges are not precise. I just want a lower bound telling me car is warm.. and a upper limit telling me car will blow ;)

ps: I'm know.. fords... but I found some information here
http://www.mustang.org.au/forum/index.php?topic=12082.0

ps2: a common joke here in Brazil. We tell fords (with 302 engine) usually blow. They really burn.. they boil