Jam Thermometer ~ Deluxe Stainless Steel £7.95 Quantity: at £7.95 each Add To Basket 1 in stock. Home made stainless steel cooking thermometer perfect for measuring exact setting points of jams, sugars and deep frying temperatures. Reads from 60°C to 204°C with clearly marked cooking temperature points. Mercury free. Handwash only. Blister carded.