Holding a hand over a hot grill, counting seconds, and pulling back when the heat is dangerously hot is a daring way to gauge the temperature of the coals. A safer and more accurate way is with CDN’s Grill Surface thermometer ($8.99). The 2¼-inch bright red dial is designed to sit directly on the grill. The thermometer registers temperatures between 100 and 800 degrees with markings showing the range for grilling (325 to 400) and searing (500 to 600). Metal handles on both sides of the face are for moving the thermometer around or taking it off the grill. With tongs of course. Available at Kitchen Outfitters, Acton Woods Plaza, 342 Great Road, Acton, 978-263-1955; Green’s Hardware & Paint, 308 Washington St., Wellesley Hills, 781-431-8877; and Tags Hardware, Porter Square Shopping Center, 29 White St., Cambridge, 617-868-7711.