Mini electric kiln project

[scott.livesey]

Thanks for the info Scott. Never dealt with anything with temperatures this high before. Our hat's off to thermocouple manufacturers for making a sensor capable of accurately responding to temperatures in this range without melting the temperature sensor. On naval guns; isn't that something? Heaving Chevy Novas 20 miles into somebody's backyard and not just any backyard...your backyard. We suppose that if the sea was calm they could have knocked the lid off your barbeque grill and all with just a slide rule and a couple of hand cranks.

gunfire control systems were much more sophisticated, they figured in curvature of the earth, where target would be, number of bags of powder, the wind, and most any thing else you could think of that would effect the flight of the shell.  the physics and math were known, it was combining all these elements using motor, gears and special potentiomoters.  you had/have variable resistors that scaled the signal that passed thru them in whatever way you wanted.  ie linear, exponential, logrythmic, or whatever you chose.  they did the same with gear trains.  it is the distance that amazes me.  in infantry combat, most things happen within 1000 yards.  in naval combat, 1000 yard is extreme close quarters.  

basic 'K' thermocouples are rated for 2300*F.  type 'R' are rated for 2700*F.