This high quality, stainless steel temperature gauge - with an easy-to-read dial - precisely monitors the temperatures inside the dome of an EGG, allowing you to achieve and maintain precise cooking temperaturesFeatures:Installation: Carefully insert stem from the outside through small hole in dome of the EGG; the silicone washer should remain on the outside of the EGG Carefully reach inside the dome, and slide retaining clip onto the stem. Squeeze the clip so that it slides easily Slide clip up the stem until the silicone washer fits snugly against the exterior of the dome. For accurate reading, thermometer must be installed past the groove on the lower portion of stem as shown below