Mark III Thermocouple Tip Mark III 10% (Type S) / 13% (Type R) / 6/30% (Type B) with Paper Tube Length of 300 to 1500mm as required according to Furnace Capacity. Mark III is used especially for Steel plants Connector type is Female Supporter type is Plastic Accuracy: +5° C. Usage: Single time used ID/OD: 28MM/42MM