1972 Shasta Compact Refrigerator Thermostat Questions

Here are the two photos that came out okay, hope they help.

sorry it isn't real clear so you can see the area where it would meet up on the stem

The other photos were too blurry but hopefully this gives an idea. I am taking the temp using a refrigerator thermometer. I used it in my house fridge and it seems to work well.

I can turn the stem using a pair of vice grip pliars but at the warmest setting is when I see the 10 - 25 degrees inside the fridge (and that is with nothing else in there.)

Thanks.
Janet