I picked up this little dental kiln (aka a small heat treat furnace) at a yard sale for $5 last week. The pyrometer is not working, so I ordered a new digital one from eBay. The analog one on the furnace is labeled to 1800º. I never measured the temp when I did the few hardening projects I did before - just eyeballed the glow - so I don't know if 1800º is hot enough, but I suspect so. The temp control is pretty simple - just low medium and high.