The Royal Range 1517 Griddle Thermostat Knob provides clear and convenient control over cooking temperatures on compatible commercial griddles. Designed with a 1-15/16-inch diameter, this knob features temperature markings from OFF, LO, 150°F, 200°F, 250°F, 300°F, 350°F, 400°F, and HI, allowing operators to select the desired heat level with ease. It works by connecting to the thermos... https://partsfe.ca/dial2-d-off-lo-150-400-hi-for-royal-range-part-1517