This Baker Bi-Metal Thermometer features a welded stainless steel construction, 3" diameter dial and dual temperature scales (ºF and ºC). This thermometer is Hermetically sealed and accurate to 1% as per ASME B40.3 Grade A. Over-range protection at 50% up to 500ºF; (10% above 500ºF). Please note you may receive a "REED" branded product which will be the exact same product as shown in this listing.