They are well known for mixing and making unauthorized substitutions.
They have a fabrication, not knifemaking mentality.
Call and see if you can figure out what they sent, then use a proper supplier like Alpha or Aldo.
No good for hot steel.
They read emissivity, which varies based on surface finish.
Black scale, shiny bright steel or red hot glowing, all different.
specs on that unit
3.5% error, so at fifteen hundred F's that's fifty degrees error
It's a way to roll out distribution to a wide audience and still keep profits in house.
Buying shelf space at hardware stores will just put them beside the Irwin china made and folks there will buy on price.
I know I have a lot of vise grips of every type and size.
Probably 30+ if you put them all in one place
I've deliberately stayed away from the store brand and no names because they just weren't as good.
First made by a blacksmith in 1921 which became Peterson mfg in Dewit Nebraska, USA...
It's on scribed
a bunch of other places