Pictured is a CH-152-35 thermostat. It is similar but not identical to the one described at http://www.wako-clinac.co.jp/product_en/ch-152-35_en/index.html
I don't have a way to heat this thermostat in a controlled fashion until the switch opens- So I cannot determine its temperature setting by experimentation.
There is more information than just the part number printed on the side of it. I am thinking that perhaps the "195" on the second row of text is the temperature rating - but I cannot find anything via Google that takes my idea from a guess to a fact.
Can someone please tell me if that "195" number is indeed the temperature setting for the thermostat and if the "4131" at bottom is useful information?
As a further help, maybe explain if this is standard marking technique for this type of component and where a reference for these markings might live?