Product review (5 stars): Great commercial thermostat for a fraction of the cost.
I bought these South Bend range thermostats for use on my commercial Lang oven/range at my restaurant. They weren't listed as being compatable but they looked identical in the pictures.. so I took a chance.  I only paid around $15 for these while Lang wanted almost $100 so I bought several since they were so inexpensive.  I was very pleased after they arrived because they fit right in when I removed my broken one.  Only problem was that the "OFF" dot stamped on the front of the oven panel didn't line up to where "OFF" was indicated on the thermostat knob so I took some Whiteout and made a new dot on the front of the oven panel... problem solved!  I need to mention that these thermostats were way off calibration... over 200 degrees off.  Turning the oven on high (475 degrees), the heating element would shut off at 250 degrees.  Just took a quick three minute re-calibration to fix the problem and it's been working perfectly for the past four months.  These are a $70 thremostat everywhere on the internet, so I think the faulty factory set calibration is why this seller was getting rid of them so cheaply.  Also it's important to mention that for the past four years I was going through heating elements on this Lang oven almost yearly.  At $300 a pop per element I was getting ready to toss this thing to the junk heap.  So far since replacing my defective thermostat with this new Southbend thermostat, I've not burned through a single element so I hope this problem has been resloved as well.