how she did that . . .
when my grandparents retired, moved to MD, hadpropane.... my grandmother would fire up the oven - after a bit open the door&stick her arm in, then 'adjust' the temperature knob . . . she had 30+ years of calibrated arm, mucho better accurate than a knob with degrees on it . . .
jeesh did I have to dig.... I do have a couple pix of the village - me, winter, frozen pond, doing the ice skating thing - the whole village then knew they were raising an idiot . . .