Round Glass Thermometer with Protective Case Types:N-11 (straight), N-12 (90 dgree angle), N- ... angle) Round Glass Thermometer with Protective Case Description It comprises a glass insert and a protecting case mainly used to measure the temperature ... : 130mm, 150mm, 160mm, 200mm, 220mm, 250mm Diameter: 20mm, 25mmMaterial of protecting case: brass, carbon steel or stainless steel3) Feature of the stem ...