Baker Instruments 314FC Magnetic Surface Thermometer, 0 to 750&deg;F (0 to 400&deg;C) Temperature Range: 0 to 750F (0 to 400C) Resolution: 10F/5C Accuracy: 2% of full scale Magnetic back Dimensions: 2" dia. x 1/2 h. (5.1 x 1.3 cm)