bimetal industrial thermometers fits indurstrial equipments, boiler, pipeline, heating measurment size: Dia 2",3",5" Bimetal industrial thermometersFits indurstrial equipments, boiler, pipeline, heating measurmentSize: Dia 2",3",5"Connection: Back,Bottom and Multi-angle connectionCase and stem material: stainless steelFace: GlassMark: we can change the temperature range,stem length and connection ...